CN114872349B - Connecting structure and connecting method for composite material plate and metal connecting piece - Google Patents

Connecting structure and connecting method for composite material plate and metal connecting piece Download PDF

Info

Publication number
CN114872349B
CN114872349B CN202210797681.3A CN202210797681A CN114872349B CN 114872349 B CN114872349 B CN 114872349B CN 202210797681 A CN202210797681 A CN 202210797681A CN 114872349 B CN114872349 B CN 114872349B
Authority
CN
China
Prior art keywords
insert
dovetail groove
composite material
composite
trapezoidal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202210797681.3A
Other languages
Chinese (zh)
Other versions
CN114872349A (en
Inventor
吕云飞
柴朋军
徐晋伟
郑宏雪
丁萍
张作朝
裴力
黄剑光
江亚彬
赵靖
王亚朋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Composite Material Co Ltd
Original Assignee
Beijing Composite Material Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Composite Material Co Ltd filed Critical Beijing Composite Material Co Ltd
Priority to CN202210797681.3A priority Critical patent/CN114872349B/en
Publication of CN114872349A publication Critical patent/CN114872349A/en
Application granted granted Critical
Publication of CN114872349B publication Critical patent/CN114872349B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/70—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/022—Mechanical pre-treatments, e.g. reshaping
    • B29C66/0224—Mechanical pre-treatments, e.g. reshaping with removal of material
    • B29C66/02245—Abrading, e.g. grinding, sanding, sandblasting or scraping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B29C66/1242—Tongue and groove joints comprising interlocking undercuts
    • B29C66/12423—Dovetailed interlocking undercuts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/36—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and impregnating by casting, e.g. vacuum casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B15/00—Superstructures, deckhouses, wheelhouses or the like; Arrangements or adaptations of masts or spars, e.g. bowsprits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B2221/00—Methods and means for joining members or elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T70/00—Maritime or waterways transport
    • Y02T70/10—Measures concerning design or construction of watercraft hulls

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Laminated Bodies (AREA)
  • Connection Of Plates (AREA)

Abstract

The invention provides a connecting structure and a connecting method of a composite material plate and a metal connecting piece, wherein the connecting structure comprises the composite material plate and the metal connecting piece, and the composite material plate is connected with the metal connecting piece; a first dovetail groove and a second dovetail groove are formed in the connecting surface of the metal connecting piece along the side length of the composite material plate; the composite plate comprises a core material, a first composite material skin, a second composite material skin, a first composite material insert and a second composite material insert; the edge of the composite material skin extends into and is paved on the inner bottom surface of the dovetail groove along the inner side wall surface of the dovetail groove, and a composite material insert is filled in the area between the dovetail groove and the composite material skin; the edges of the core material fit into the areas between the dovetail slots. The composite material plate and the metal connecting piece are integrally formed by the embedded connecting structure and the vacuum auxiliary forming, so that the problems of local stress concentration, low connecting strength and the like caused by bolt connection or secondary bonding of the composite material and the metal material are solved, and the sealing effect of the connecting structure can be ensured.

Description

Connecting structure and connecting method for composite material plate and metal connecting piece
Technical Field
The invention belongs to the technical field of ship composite material application and ships, and particularly relates to a connecting structure and a connecting method of a composite material plate and a metal connecting piece.
Background
The composite material has the advantages of high specific strength, specific stiffness, strong designability, good fatigue resistance and corrosion resistance, and the like, and is widely applied to the engineering fields of aerospace, ship industry, buildings, sports goods, and the like since the past. Meanwhile, due to rapid development of modern science and technology, metal materials with single functions cannot meet the requirements of lightweight-multifunctional development of modern ships, particularly for the military field, in order to improve the operational capacity of the ships, the dead weight of the ships is required to be reduced as much as possible so as to improve the maneuvering capacity of the ships, a certain stealth effect is achieved, and composite materials with strong designability have the functions of weight reduction, noise reduction and the like, so that the composite materials are more important for application of superstructure of the ships.
A typical ship example is a France Raphette protective ship, a sandwich composite material hangar is designed on a main steel ship body, the stealth of the ship is improved, the structural weight is reduced, and the navigation speed is improved; sandwich composite material integrated superstructure structure designed by the United states of the Wilford drive ship to enhance the stealth of ships, reduce the structural weight of the superstructure, reduce the center of gravity and improve the platform stability. Meanwhile, the glass fiber reinforced polymer matrix composite is nonmagnetic, and has good dielectric property and microwave penetrability, so that the composite is widely applied to the minesweeping/hunting boats due to the characteristics. Therefore, the sandwich composite material has the characteristics of light weight, high strength, no magnetism, wave transmission/wave absorption and the like, and can meet the development requirements of ships in the aspects of stealth, weight reduction and the like in the future; compared with the traditional metal material, the composite material has the characteristics of chemical corrosion resistance, fatigue resistance and the like and is more suitable for the running environment of ships. In addition, the weight reduction of the ship means that the effective load is increased, the oil consumption is reduced, the emission is reduced, particularly the weight reduction of the superstructure can also reduce the center of gravity and improve the stability. The method also conforms to the development trend of green ships, and responds to the social theme of energy conservation and emission reduction.
At present, the main material of the superstructure of the large-scale water surface ship in China is still made of corrosion-resistant steel or aluminum alloy, and a reasonable and reliable connecting structure is a great problem in the application of the superstructure made of composite materials. The composite material and the metal are usually connected by means of bolt connection, adhesive bonding, mixed connection and the like. However, mechanical connections can transmit large loads but require openings in the structure, causing the composite fibers to break and stress concentrations around the hole. The glued joint does not require holes, does not require heavy metal fasteners, does not cause stress concentrations, and the joint is light and inexpensive, but its load-bearing capacity and joint strength are relatively low. The hybrid connection, namely the mechanical connection and the adhesive connection, can relieve the defects of a certain connection mode to a certain extent, but can bring about the hidden trouble of another connection mode. The conditions that a ship runs in a complex marine environment and can often bear wave load, heavy concentrated load, acting force (ship) when a weapon is launched, nuclear explosion impact load (ship), wind load and the like are combined, meanwhile, due to the particularity of the position of an superstructure, the borne load is increased, the superstructure of the ship body has the problems of strength, rigidity, stability, fatigue and the like, and particularly, the weak link of the overall structure of the ship is formed in the connecting area of the bottom of the superstructure and a main ship body.
Therefore, a composite superstructure and steel main hull connecting structure with high strength, good safety and a certain sealing effect is needed to meet engineering application requirements.
Disclosure of Invention
The invention solves the technical problem of providing a connecting structure and a connecting method of a composite material plate and a metal connecting piece, wherein the composite material plate and the metal connecting piece are integrated through an embedded connecting structure and a vacuum auxiliary forming process, so that the problems of local stress concentration, low connecting strength and the like caused by bolt connection or secondary bonding of the composite material and the metal material are solved, meanwhile, the sealing effect in the connecting structure is ensured, the sealing function of the connecting structure is as long as that of a composite material part, the problem of failure and replacement of a sealing element in mechanical connection is avoided, and the problem of failure of loaded debonding sealing in bonding connection is also avoided.
In order to solve the above problems, an aspect of the present invention provides a connection structure of a composite material plate and a metal connecting member:
the composite material plate is connected with the metal connecting piece at the edge;
a first dovetail groove and a second dovetail groove are respectively arranged on two sides of the connecting surface of the metal connecting piece, and the first dovetail groove and the second dovetail groove are arranged along the side length direction of the composite material plate;
the composite plate comprises a core material, a first composite material skin, a second composite material skin, a first composite material insert and a second composite material insert; the first composite material skin and the second composite material skin are respectively arranged on the surfaces of two sides of the core material; the edge of the first composite material skin extends into and is paved to the inner bottom surface of the first dovetail groove along the inner side wall surface on one side of the first dovetail groove, and the first composite material insert is filled in the area between the first dovetail groove and the first composite material skin; the edge of the second composite material skin extends into and is paved to the inner bottom surface of the second dovetail groove along the inner side wall surface on one side of the second dovetail groove, and the second composite material insert is filled in the area between the second dovetail groove and the second composite material skin; the edge of the core material is embedded into a region between the first dovetail groove and the second dovetail groove.
According to the connecting structure of the composite plate and the metal connecting piece, the composite plate and the metal connecting piece are connected in a manner that the skin is embedded into the dovetail groove formed in the connecting surface of the metal connecting piece, the composite plate and the metal connecting piece are combined before forming, and the composite plate and the metal connecting piece are integrally formed, so that the composite plate and the metal connecting piece meet the requirement on connecting strength, the sealing effect is ensured, compared with mechanical connection, stress concentration borne by the composite plate and the metal connecting piece at the connecting part can be eliminated, compared with bonding connection, the integrally formed embedded connecting mode has higher strength and stability, and the reliability of a product in a use environment can be improved. After the metal connecting piece and the main hull form a connecting structure, the metal connecting piece and the main hull are connected through conventional welding or mechanical fastening connection, and the shape of the metal connecting piece can be designed according to different connecting positions and forms of the metal connecting piece and the main hull, so that the weak problem of a connecting area between the bottom of the composite superstructure and the main hull is solved. The connection structure of the composite material plate and the metal connecting piece has high reliability, high connection strength and good stability, and is beneficial to the application of the composite material superstructure on ships.
Preferably, the first composite insert comprises a first trapezoidal insert, a first Y-shaped insert and a first composite transition layer, the first composite transition layer is wrapped on the outer side of the first Y-shaped insert, the first trapezoidal insert and the first Y-shaped insert wrapped on the first composite transition layer are spliced to form the first composite insert, and the first trapezoidal insert is arranged close to one side of the first composite skin;
the second composite material insert comprises a second trapezoidal insert, a second Y-shaped insert and a second composite material transition layer, the second composite material transition layer is wrapped on the outer side of the second Y-shaped insert, the second trapezoidal insert and the second Y-shaped insert wrapping the second composite material transition layer are spliced to form the second composite material insert, and the second trapezoidal insert is arranged close to one side of the second composite material skin.
According to the connecting structure of the composite material plate and the metal connecting piece, the first composite material insert and the second composite material insert are arranged to fix the positions of the reinforcing materials when the first dovetail groove and the second dovetail groove are filled with the first reinforcing material and the second reinforcing material, so that the problem that the first skin and the second skin are poor in mechanical strength due to uneven resin distribution in the dovetail grooves can be avoided, meanwhile, the integrated connecting structure of the local composite material and the metal part of the large superstructure can be obtained, the bearing capacity and the reliability of the connecting structure of the composite material and the metal are improved, and the popularization is strong.
Preferably, the difference between the bottom angle of the first trapezoidal insert close to the first skin and the bottom angle of the corresponding first dovetail groove is not more than 5 degrees; the difference between the bottom angle of one side, close to the second skin, of the second trapezoidal insert and the bottom angle of the corresponding second dovetail groove is not more than 5 degrees; the angle difference between the bottom angle of one side, close to the first dovetail groove, of the first Y-shaped insert and the bottom angle of the corresponding first dovetail groove is not more than 5 degrees; the angle difference between the bottom angle of one side, close to the second dovetail groove, of the second Y-shaped insert and the bottom angle of the corresponding second dovetail groove is not more than 5 degrees; the structural dimensions of the first composite insert and/or the second composite insert conform to the following equation:
h=h 1 +h 3 +b；
h=h 2 +b；
h is the height of the first dovetail groove or the second dovetail groove; h is 1 Is the height of the first or second Y-shaped insert; h is 2 Is the height of the first trapezoidal insert or the second trapezoidal insert; h is 3 Is the thickness of the reinforcement material of the first composite transition layer or the reinforcement material of the second composite transition layer; b is the thickness of the reinforcement material of the first composite skin or the second composite skin.
Preferably, a first resin runner is further arranged on a side wall of the first trapezoidal insert and/or the second trapezoidal insert, the first resin runner includes a first transverse resin runner arranged along the length direction of the first trapezoidal insert or the second trapezoidal insert and a first longitudinal resin runner perpendicular to the first transverse resin runner, the first transverse resin runner penetrates through two ends of the first trapezoidal insert or the second trapezoidal insert in the length direction, and the first longitudinal resin runner penetrates through the top and the bottom of the first trapezoidal insert or the second trapezoidal insert;
the side wall of the first Y-shaped insert, which is close to the first dovetail groove, and/or the side wall of the second Y-shaped insert, which is close to the second dovetail groove, is provided with a second resin runner, the second resin runner comprises a second transverse resin runner and a second longitudinal resin runner, the second transverse resin runner is arranged along the length direction of the first Y-shaped insert or the second Y-shaped insert, the second longitudinal resin runner is perpendicular to the second transverse resin runner, the second transverse resin runner penetrates through the two ends of the length direction of the first Y-shaped insert or the second Y-shaped insert, and the second longitudinal resin runner penetrates through the top and the bottom of the first trapezoidal insert or the second trapezoidal insert.
The resin runner is arranged on the composite material insert, so that the resin in the composite material reinforced material fiber fabric in the metal connecting piece can be effectively impregnated in the molding process; the through-type resin flow passage can meet the glue liquid circulation in the length direction of the dovetail groove during the molding of the composite material, and the in-plane impregnation effect during the pouring is ensured.
Preferably, the cross section of the first resin runner and/or the second resin runner is triangular or elliptical.
Preferably, the metal connecting piece comprises a first metal plate and a second metal plate, the first metal plate is used for being connected with the composite material plate, the second metal plate is used for being connected with a metal piece, the first dovetail groove and the second dovetail groove are formed in one side plate surface of the first metal plate, the second metal plate is connected with the other side plate surface of the first metal plate, a plurality of reinforcing ribs are arranged between the first metal plate and the second metal plate, and the plurality of reinforcing ribs are arranged at intervals along the length direction of the first metal plate. The arrangement of the reinforcing ribs ensures that the connecting structure has better mechanical property, safety and reliability.
Preferably, the interval between adjacent reinforcing ribs is 350-500 mm.
Preferably, the reinforcing rib is T10 symmetrical flat bulb steel.
Preferably, the first composite skin and/or the second composite skin and/or the first composite transition layer and/or the second composite transition layer are/is a fiber reinforced resin based composite; the reinforcing material is unidirectional fabric, square fabric, quadriaxial fabric and other directional fabric, and is determined according to actual design; the reinforcing material is selected from one or a combination of more of carbon fiber, glass fiber, quartz fiber and aramid fiber; the resin matrix is one or a combination of several of epoxy resin, vinyl resin, unsaturated polyester resin and cyanate resin.
Preferably, the first trapezoidal insert and/or the second trapezoidal insert and/or the first Y-shaped insert and/or the second Y-shaped insert are/is a fiber reinforced resin matrix composite material, the reinforcing material may be a material such as carbon fiber, glass fiber, quartz fiber, and the like, and the resin material may be vinyl resin.
Preferably, the core material is one or a combination of more of balsa wood, polyvinyl chloride foam, NOMEX paper honeycomb, rigid polyurethane foam and polymethacrylimide.
Preferably, the metal connecting piece is made of steel; further preferably, the metal connecting piece is one of 907A marine steel, Q345 steel and 45# steel.
Another aspect of the present invention provides a connection structure of a composite plate and a metal main hull:
the composite material plate and metal connecting piece connecting structure comprises a metal main ship body and the composite material plate and metal connecting piece connecting structure, wherein the metal connecting piece and the metal main ship body are connected through welding or mechanical fastening. Connect metal main hull and combined material board through this connection structure, compare with mechanical connection mode, can eliminate the stress concentration that combined material board and metal main hull bore at the connection site, compare in adhesive bonding, integrated into one piece's embedded connection mode has higher intensity and stability, can improve the reliability of product in service environment, sealed effect in connection structure has been guaranteed simultaneously, make its sealing function and combined material part life-span with, mechanical connection's sealing member inefficacy change problem has been avoided, the adhesive bonding loaded debond sealing inefficacy problem has also been avoided, help the application of combined material superstructure on naval vessel.
In another aspect, the present invention provides a method for connecting a composite material plate and a metal connecting member, including the steps of:
s1, manufacturing a metal connecting piece, and respectively processing a first dovetail groove and a second dovetail groove at two side edges of a connecting surface of the metal connecting piece, wherein the first dovetail groove and the second dovetail groove are arranged along the direction of the side length of the composite plate after connection;
s2, extending one end of a first reinforcing material into the first dovetail groove, and fixing the end of the first reinforcing material in the first dovetail groove through a first composite material insert;
s3, processing a core material, putting the core material at the connecting surface of the metal connecting piece, and extending the first reinforcing material to the surface covering one side of the core material;
s4, extending one end of a second reinforcing material into the second dovetail groove, and fixing the end of the second reinforcing material in the second dovetail groove through a second composite material insert;
s5, extending the second reinforcing material to cover the surface of the other side of the core material;
and S6, setting a mould, paving auxiliary materials for molding, pouring resin materials into the first reinforcing material and the second reinforcing material by adopting a vacuum introduction process, and curing and molding to complete the connection of the composite material plate and the metal connecting piece.
According to the connecting method of the composite plate and the metal connecting piece, the composite material insert is used for embedding and fixing the skin reinforcing material into the metal connecting piece, then the composite plate and the metal connecting piece are integrally formed through a vacuum auxiliary forming process, and the composite plate and the metal connecting piece meet the requirement on connecting strength and guarantee the sealing effect through the embedded integrally formed connecting structure; compared with mechanical connection, the stress concentration borne by the composite plate and the metal connecting piece at the connecting part can be eliminated, and compared with bonding connection, the integrally formed embedded connection mode has higher strength and stability and can improve the reliability of a product in a use environment. After the metal connecting piece and the main ship body are integrated, the metal connecting piece and the main ship body are connected through a traditional welding process, the shape of the metal connecting piece can be designed according to different connecting positions and connecting forms of the metal connecting piece and the main ship body, and therefore the weak problem of the connecting area of the bottom of the composite superstructure and the main ship body is solved.
Preferably, the first composite insert comprises a first trapezoidal insert, a first Y-shaped insert and a first composite transition layer; the second composite insert comprises a second trapezoidal insert, a second Y-shaped insert and a second composite transition layer;
step S2 specifically includes:
extending one end of a first reinforcing material wrapping a first trapezoidal insert into the first dovetail groove along the inner wall surface of one side of the first dovetail groove, paving the end of the first reinforcing material into the inner bottom surface of the first dovetail groove, and knocking a first Y-shaped insert wrapping a first composite material transition layer reinforcing material into a space between the first dovetail groove and the first trapezoidal insert by adopting a blunt instrument so as to fix the end part of the first reinforcing material in the first dovetail groove;
step S4 specifically includes:
and one end of a second reinforcing material wrapping a second trapezoidal insert extends into the second dovetail groove along the inner wall surface of one side of the second dovetail groove and is paved on the inner bottom surface of the second dovetail groove, and then a blunt is adopted to knock a second Y-shaped insert wrapping a second composite material transition layer reinforcing material into a space between the second dovetail groove and the second trapezoidal insert, so that the end part of the second reinforcing material is fixed in the second dovetail groove.
Preferably, the bottom angle of the side of the first trapezoidal insert close to the first reinforcing material is the same as or different from the bottom angle of the corresponding first dovetail groove by no more than 5 °; the bottom angle of one side, close to the second reinforcing material, of the second trapezoidal insert is the same as or different from the bottom angle of the corresponding second dovetail groove by not more than 5 degrees; the bottom angle of one side, close to the first dovetail groove, of the first Y-shaped insert is the same as or different from the bottom angle of the corresponding first dovetail groove by no more than 5 degrees; the bottom angle of one side, close to the second dovetail groove, of the second Y-shaped insert is the same as or different from the bottom angle of the corresponding second dovetail groove by no more than 5 degrees; the structural dimensions of the first composite insert and/or the second composite insert conform to the following equation:
h=h 1 +h 3 +b；
h=h 2 +b；
wherein h is the firstThe height of the dovetail slot or the second dovetail slot; h is 1 Is the height of the first or second Y-shaped insert; h is 2 Is the height of the first trapezoidal insert or the second trapezoidal insert; h is 3 Is the thickness of the first composite transition layer reinforcement or the second composite transition layer reinforcement; b is the thickness of the first reinforcing material or the second reinforcing material.
Preferably, the metal connecting piece comprises a first metal plate and a second metal plate, the first metal plate is used for being connected with the composite material plate, the second metal plate is used for being connected with a metal piece, the first dovetail groove and the second dovetail groove are formed in one side plate surface of the first metal plate, the second metal plate is connected with the other side plate surface of the first metal plate, a plurality of reinforcing ribs are arranged between the first metal plate and the second metal plate, and the plurality of reinforcing ribs are arranged at intervals along the length direction of the first metal plate.
Preferably, the method further comprises, before step S2:
processing a first resin runner on the side wall of the first trapezoidal insert and/or the second trapezoidal insert, wherein the first resin runner comprises a first transverse resin runner and a first longitudinal resin runner, the first transverse resin runner is arranged along the length direction of the first trapezoidal insert or the second trapezoidal insert, the first longitudinal resin runner is perpendicular to the first transverse resin runner, the first transverse resin runner penetrates through two ends of the length direction of the first trapezoidal insert or the second trapezoidal insert, and the first longitudinal resin runner penetrates through the top and the bottom of the first trapezoidal insert or the second trapezoidal insert;
and processing a second resin flow channel on the side wall of the first Y-shaped insert, which is close to the first dovetail groove, and/or on the side wall of the second Y-shaped insert, which is close to the second dovetail groove, wherein the second resin flow channel comprises a second transverse resin flow channel arranged along the length direction of the first Y-shaped insert or the second Y-shaped insert and a second longitudinal resin flow channel vertical to the second transverse resin flow channel, the second transverse resin flow channel penetrates through the two ends of the length direction of the first Y-shaped insert or the second Y-shaped insert, and the second longitudinal resin flow channel penetrates through the top and the bottom of the first trapezoidal insert or the second trapezoidal insert.
Preferably, in step S1, the method for machining the first dovetail groove and the second dovetail groove is one or a combination of linear cutting and laser cutting.
Preferably, the method further includes performing surface treatment on the inner surfaces of the first dovetail groove and the second dovetail groove and the surface of the region between the first dovetail groove and the second dovetail groove before step S2, where the surface treatment is one or a combination of sand blasting, mechanical polishing, anodizing and surface phosphating. By carrying out surface treatment on the metal connecting piece in advance, the interface bonding effect between the fiber reinforced composite material skin and the inner surface of the metal connecting piece can be improved, and the connecting strength between the composite material plate and the metal connecting piece is further improved.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the connecting structure and the method for the composite plate and the metal connecting piece, the composite material insert is used for embedding and fixing the reinforcing material of the skin in the metal connecting piece, then the composite plate and the metal connecting piece are integrally formed through a vacuum auxiliary forming process, and the composite plate and the metal connecting piece meet the requirement on the connecting strength and guarantee the sealing effect through the embedded integrally formed connecting structure; compared with mechanical connection, the stress concentration borne by the composite plate and the metal connecting piece at the connecting part can be eliminated, and compared with bonding connection, the integrally formed embedded connection mode has higher strength and stability and can improve the reliability of a product in a use environment. After the metal connecting piece and the main ship body are integrated, the metal connecting piece and the main ship body are connected through a traditional welding process, the shape of the metal connecting piece can be designed according to different connecting positions and connecting forms of the metal connecting piece and the main ship body, and therefore the weak problem of the connecting area of the bottom of the composite superstructure and the main ship body is solved.
2. According to the connecting structure of the composite plate and the metal main ship body, the composite plate and the metal connecting piece are connected through embedded integral forming, and then the metal connecting piece and the metal main ship body are connected in a welding or mechanical connection mode, so that the problems of local stress concentration, low connection strength and the like caused by direct bolt connection or secondary bonding of the composite plate and the metal main ship body are solved, meanwhile, the sealing effect in the connecting structure is ensured, the service life of the sealing function is the same as that of a composite material part, the problem of failure and replacement of a sealing piece in mechanical connection is avoided, the problem of failure of bonding connection due to loading and debonding sealing is also avoided, and the application of a superstructure of a composite material on a ship is facilitated.
Drawings
FIG. 1 is a schematic view showing a connection structure of a composite material plate and a metal connecting member according to example 2 of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic structural view of a metal joining member in a joining structure of a composite material plate and the metal joining member according to example 2 of the present invention;
FIG. 4 is a schematic structural view of a first trapezoidal insert in a connecting structure of a composite material plate and a metal connecting member according to example 2 of the present invention;
FIG. 5 is a cross-sectional view of a first trapezoidal insert in the connecting structure of a composite plate and a metal connecting member according to example 2 of the present invention;
FIG. 6 is a schematic structural view of a first Y-shaped insert in a connecting structure of a composite material plate and a metal connecting member according to example 2 of the invention;
FIG. 7 is a cross-sectional view of a first Y-shaped insert in the connecting structure of a composite material plate and a metal connecting member according to example 2 of the invention;
fig. 8 is a dimensional indication view at a in the connection structure of the composite material plate and the metal joining member according to example 2 of the present invention.
Wherein:
1-a composite plate; 11-a core material; 12-a first composite skin; 13-a second composite skin; 14-a first trapezoidal insert; 15-a first Y-shaped insert; 16-a first composite transition layer; 17-a first resin runner; 18-a second resin runner; 2-a metal connector; 21-a first metal plate; 22-a second metal plate; 23-reinforcing ribs; 3-a first dovetail groove; 4-second dovetail groove.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The method for connecting the composite material plate and the metal connecting piece comprises the following steps of:
s1, manufacturing a metal connecting piece 2, and respectively processing a first dovetail groove 3 and a second dovetail groove 4 at two side edges of a connecting surface of the metal connecting piece 2 by adopting a linear cutting method, wherein the first dovetail groove 3 and the second dovetail groove 4 are arranged along the direction of the side length of a connected composite material plate 1; the metal connecting piece is 1000mm in total length, 300mm in height and 150mm in width, the metal connecting piece comprises a first metal plate 21 and a second metal plate 22, a first dovetail groove 3 and a second dovetail groove 4 are formed in one side plate surface of the first metal plate 21, the second metal plate 22 is connected with the other side plate surface of the first metal plate 21, a plurality of reinforcing ribs 23 are arranged between the first metal plate and the second metal plate and are arranged at intervals of 200mm along the length direction of the first metal plate, the opening widths of the first dovetail groove 3 and the second dovetail groove 4 are 25mm, the width of the lower bottom is 40mm, and the height is 48 mm; the metal connecting piece is made of 907A steel for the ship; the specification of the reinforcing rib is T10 symmetrical flat bulb steel;
s2a, performing sand blasting surface treatment on the inner surfaces of the first dovetail groove 3 and the second dovetail groove 4 and the surfaces of the areas between the first dovetail groove and the second dovetail groove;
s2b, manufacturing a first composite insert and a second composite insert according to the figures 4, 5, 6 and 7, wherein the upper bottoms of the first trapezoidal insert 14 and the second trapezoidal insert are 7mm, the lower bottom of the first trapezoidal insert is 21mm, the height of the first trapezoidal insert is 40mm, the upper bottoms of the first Y-shaped insert 15 and the second Y-shaped insert are 7mm, the lower bottom of the first Y-shaped insert is 4mm, the height of the first Y-shaped insert is 38.5mm, and the 4 inserts are made of glass fiber reinforced vinyl resin composite materials; the bottom angle of the first trapezoidal insert and the bottom angle of the second trapezoidal insert are the same as the bottom angle of the corresponding dovetail groove, and the bottom angle of the first Y-shaped insert are the same as the bottom angle of the corresponding dovetail groove;
processing a first resin runner 17 on the side walls of the first trapezoidal insert and the second trapezoidal insert, wherein the first resin runner comprises a first transverse resin runner arranged along the length direction of the first trapezoidal insert or the second trapezoidal insert and a first longitudinal resin runner vertical to the first transverse resin runner, the first transverse resin runner penetrates through the two ends of the first trapezoidal insert or the second trapezoidal insert in the length direction, and the first longitudinal resin runner penetrates through the top and the bottom of the first trapezoidal insert or the second trapezoidal insert; and a second resin flow passage 18 is processed on the side wall of the first Y-shaped insert close to the first dovetail groove and the side wall of the second Y-shaped insert close to the second dovetail groove, the second resin flow passage comprises a second transverse resin flow passage arranged along the length direction of the first Y-shaped insert or the second Y-shaped insert and a second longitudinal resin flow passage vertical to the second transverse resin flow passage, the second transverse resin flow passage penetrates through the two ends of the first Y-shaped insert or the second Y-shaped insert in the length direction, and the second longitudinal resin flow passage penetrates through the top and the bottom of the first trapezoidal insert or the second trapezoidal insert.
S2, adding the first reinforcing material (18 layers with the density of 800 +/-50 g/m) 2 The thickness of the E glass fiber fabric is 8mm, one end of the E glass fiber fabric is wrapped by the first trapezoidal insert, the E glass fiber fabric extends into the first dovetail groove along the inner wall surface of one side of the first dovetail groove, and is paved to the inner bottom surface of the first dovetail groove, and then the first composite material transition layer reinforcing material (the density of the 6 layer is 200 +/-50 g/m) 2 The thickness of the S glass fiber fabric is 1.5mm, the S glass fiber fabric wraps the first Y-shaped insert, and the wrapped first Y-shaped insert is knocked into a space between the first dovetail groove and the first trapezoid insert by adopting a blunt instrument, so that the end part of the first reinforcing material is fixed in the first dovetail groove to form a structure A shown in the figure 1;
s3, processing a core material 11, wherein the core material is polyvinyl chloride foam (PVC), putting the core material at the connecting surface of the metal connecting piece, and extending a first reinforcing material to the surface of one side of the core material;
S4.a second reinforcing material (18 layers with a density of 800 + -50 g/m) 2 E fiberglass fabric) of the second dovetail groove, extends into the second dovetail groove along the inner wall surface of one side of the second dovetail groove, and is laid to the inner bottom surface of the second dovetail groove, and then a second composite material transition layer reinforcing material (the layer density of 3 layers is 800 ± 50 g/m) is used 2 E glass fabric) and knocking the wrapped second Y-shaped insert into a space between the second dovetail groove and the second trapezoidal insert by using a blunt instrument, so that the end of the second reinforcing material is fixed in the second dovetail groove, and a structure B shown in fig. 1 is formed;
s5, extending the second reinforcing material to the surface covering the other side of the core material;
s6, after layering is finished, closing the die to check air tightness, after the air tightness meets the requirements, molding by adopting a vacuum infusion process, and integrally infusing resin materials into the first reinforced material, the second reinforced material, the first composite material transition layer reinforced material and the second composite material transition layer reinforced material, wherein the resin is a vinyl resin system: the glue amount is about 69kg, and then after curing for 24 hours in a room temperature environment, the product is obtained after demoulding. At this time, the length of the composite material sandwich plate is 1000mm, and the thickness of the sandwich plate is 62 mm. The height of the sandwich plate is 700 mm.
Example 2
As shown in fig. 1 and 2, this example provides a connection structure of a composite material plate and a metal connecting member obtained by the connection method of example 1:
the composite material plate comprises a composite material plate 1 and a metal connecting piece 2, wherein the edge of the composite material plate 1 is connected with the metal connecting piece 2;
a first dovetail groove 3 and a second dovetail groove 4 are respectively arranged on two sides of the connecting surface of the metal connecting piece 2, and the first dovetail groove 3 and the second dovetail groove 4 are arranged along the side length direction of the composite material plate;
the composite plate 1 comprises a core material 11, a first composite material skin 12, a second composite material skin 13, a first composite material insert and a second composite material insert; the first composite material skin 12 and the second composite material skin 13 are respectively arranged on the surfaces of two sides of the core material 11; the edge of the first composite material skin 12 extends into and is paved to the inner bottom surface of the first dovetail groove along the inner side wall surface on one side of the first dovetail groove, and a first composite material insert is filled in the area between the first dovetail groove and the first composite material skin; the edge of a second composite material skin 13 extends into and is paved to the inner bottom surface of the second dovetail groove along the inner side wall surface on one side of the second dovetail groove, and a second composite material insert is filled in the area between the second dovetail groove and the second composite material skin; the edge of core 11 is fitted into the region between the first dovetail groove and the second dovetail groove.
The first composite material insert and the second composite material insert are used for fixing reinforcing materials of the first composite material skin and the second composite material skin in the dovetail groove, and the problem that the mechanical strength of the first skin and the second skin is poor due to uneven distribution of resin in the dovetail groove is avoided. The structure size of the composite material insert can be adjusted according to actual requirements, a single insert can be adopted, and an integral structure can be formed after a plurality of inserts are spliced.
In order to ensure that the composite material insert can be more attached to a reinforcing material and is more convenient to load into a dovetail groove, preferably, the first composite material insert comprises a first trapezoidal insert 14, a first Y-shaped insert 15 and a first composite material transition layer 16, the first composite material transition layer 16 is wrapped on the outer side of the first Y-shaped insert 15, the first trapezoidal insert 14 and the first Y-shaped insert wrapping the first composite material transition layer are spliced to form the first composite material insert, and the first trapezoidal insert is arranged close to one side of the first composite material skin; similarly, the second composite material insert comprises a second trapezoid insert, a second Y-shaped insert and a second composite material transition layer, the second composite material transition layer is wrapped on the outer side of the second Y-shaped insert, the second trapezoid insert and the second Y-shaped insert wrapping the second composite material transition layer are spliced to form the second composite material insert, and the second trapezoid insert is arranged close to one side of the second composite material skin.
In order to ensure uniform filling thickness of the reinforcing material in the dovetail groove and further ensure the mechanical property of the connection structure, preferably, as shown in fig. 8, the difference between the bottom angles γ of the first trapezoidal insert and the second trapezoidal insert and the bottom angles θ of the first dovetail groove and the second dovetail groove is not greater than 5 °, in this embodiment, the angles of the first trapezoidal insert and the second trapezoidal insert are the same; the difference between the bottom angles alpha of the first Y-shaped insert and the second Y-shaped insert and the bottom angles beta of the corresponding first dovetail groove and the second dovetail groove is not more than 5 degrees, and in the embodiment, the angles of the first Y-shaped insert and the second Y-shaped insert are the same; the structural dimensions of the first composite insert and the second composite insert conform to the following formula:
h=h 1 +h 3 +b；
h=h 2 +b；
h is the height of the first dovetail groove and the height of the second dovetail groove; h is 1 The heights of the first Y-shaped insert and the second Y-shaped insert are set; h is 2 The heights of the first trapezoidal insert and the second trapezoidal insert are set; h is 3 The thickness of the reinforcing material of the first composite material transition layer and the thickness of the reinforcing material of the second composite material transition layer; and b is the thickness of the reinforcing materials of the first composite material skin and the second composite material skin.
In the embodiment, the height of the first dovetail groove and the second dovetail groove is 55mm, the opening width is 25mm, and the width of the lower bottom is 45 mm; the heights of the first trapezoidal insert and the second trapezoidal insert are 49mm, the upper bottom is 15mm, the lower bottom is 35mm, and the first trapezoidal insert and the second trapezoidal insert are made of glass fiber reinforced vinyl resin composite materials; the upper bottoms of the first Y-shaped insert and the second Y-shaped insert are 7mm, the lower bottoms of the first Y-shaped insert and the second Y-shaped insert are 4mm, the height of the first Y-shaped insert and the second Y-shaped insert is 38.5mm, and the first Y-shaped insert and the second Y-shaped insert are made of glass fiber reinforced vinyl resin composite materials; the reinforcing material of the first composite material transition layer and the reinforcing material of the second composite material transition layer have 6-layer density of 200 +/-50 g/m 2 The thickness of the S glass fiber fabric is 1.5 mm.
In order to ensure that the resin in the composite material reinforced material fiber fabric in the metal connecting piece can be effectively impregnated in the molding process and ensure the in-plane impregnation effect during pouring, preferably, as shown in fig. 4, 5, 6 and 7, the side walls of the first trapezoidal insert and the second trapezoidal insert are further provided with a first resin runner 17, the first resin runner comprises a first transverse resin runner and a first longitudinal resin runner, the first transverse resin runner is arranged along the length direction of the first trapezoidal insert or the second trapezoidal insert, the first longitudinal resin runner is perpendicular to the first transverse resin runner, the first transverse resin runner penetrates through the two ends of the length direction of the first trapezoidal insert or the second trapezoidal insert, and the first longitudinal resin runner penetrates through the top and the bottom of the first trapezoidal insert or the second trapezoidal insert. And a second resin flow channel 18 is arranged on the side wall of the first Y-shaped insert, which is close to the first dovetail groove, and the side wall of the second Y-shaped insert, which is close to the second dovetail groove, the second resin flow channel comprises a second transverse resin flow channel arranged along the length direction of the first Y-shaped insert or the second Y-shaped insert and a second longitudinal resin flow channel vertical to the second transverse resin flow channel, the second transverse resin flow channel penetrates through the two ends of the first Y-shaped insert or the second Y-shaped insert in the length direction, and the second longitudinal resin flow channel penetrates through the top and the bottom of the first trapezoidal insert or the second trapezoidal insert.
Further, the shape of the resin runner may be adjusted, and preferably, the cross section of the first resin runner and the cross section of the second resin runner are triangular or elliptical, and in this embodiment, the cross section of the resin runner is elliptical.
Preferably, as shown in fig. 3, the metal connecting member 2 includes a first metal plate 21 for connecting with the composite material plate and a second metal plate 22 for connecting with the metal member, the first dovetail groove 3 and the second dovetail groove 4 are disposed on one side of the first metal plate 21, the second metal plate 22 is connected with the other side of the first metal plate 21, and a plurality of reinforcing ribs 23 are further disposed between the first metal plate and the second metal plate for the connection structure to have better mechanical properties, safety and reliability, and the plurality of reinforcing ribs 23 are disposed at intervals along the length direction of the first metal plate.
Further, in the embodiment, the total length of the metal connecting piece is 1000mm, the height is 300mm, the width is 150mm, and the reinforcing ribs are arranged at intervals of 200mm along the length direction of the first metal plate; the reinforcing ribs are T10 symmetrical flat bulb steels.
The first composite material skin, the second composite material skin, the first composite material transition layer and the second composite material transition layer are made of fiber reinforced resin matrix composite materials; the reinforcing material can be selected from unidirectional fabric, square fabric, quadriaxial fabric and other directional fabric, and is determined according to actual design; the reinforcing material may be carbon fiber, glass fiber, or quartz fiberOne or a combination of several of aramid fiber and aramid fiber; the resin matrix can be one or the combination of several of epoxy resin, vinyl resin, unsaturated polyester resin and cyanate resin. In this embodiment, the reinforcing materials of the first composite material skin, the second composite material skin, the first composite material transition layer and the second composite material transition layer are all reinforced materials with the surface density of 800 ± 50g/m 2 The resin material of the E glass fiber fabric is vinyl resin.
Wherein, the core material can be one or a combination of a plurality of balsa wood, polyvinyl chloride foam, NOMEX paper honeycomb, hard polyurethane foam and polymethacrylimide. In this embodiment, the core material is balsa wood.
The metal connecting piece is made of steel, and can be made of 907A marine steel, Q345 steel or 45# steel, and in the embodiment, the metal connecting piece is made of 907A marine steel.
Example 3
The structure for connecting the composite plate and the metal main hull of the embodiment includes the metal main hull and the structure for connecting the composite plate and the metal connecting member of the embodiment 2, and the metal connecting member and the metal main hull are connected by welding or mechanical fastening.
Connect metal main hull and combined material board through this connection structure, compare with mechanical connection mode, can eliminate the stress concentration that combined material board and metal main hull bore at the connection site, compare in adhesive connection, integrated into one piece's embedded connected mode has higher intensity and stability, can improve the reliability of product in service environment, sealed effect in connection structure has been guaranteed simultaneously, make its sealed function and combined material part with the life-span, mechanical connection's sealing member inefficacy change problem has been avoided, the adhesive connection loaded debond sealed inefficacy problem has also been avoided, help the application of combined material superstructure on the naval vessel.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims (10)

1. The utility model provides a connection structure of composite material board and metal connecting piece which characterized in that:
the composite material plate is connected with the metal connecting piece at the edge;
a first dovetail groove and a second dovetail groove are respectively arranged on two sides of the connecting surface of the metal connecting piece, and the first dovetail groove and the second dovetail groove are arranged along the side length direction of the composite material plate;
the composite plate comprises a core material, a first composite material skin, a second composite material skin, a first composite material insert and a second composite material insert; the first composite material skin and the second composite material skin are respectively arranged on the surfaces of two sides of the core material; the edge of the first composite material skin extends into and is paved to the inner bottom surface of the first dovetail groove along the inner side wall surface on one side of the first dovetail groove, and the first composite material insert is filled in the area between the first dovetail groove and the first composite material skin; the edge of the second composite material skin extends into and is paved on the inner bottom surface of the second dovetail groove along the inner side wall surface on one side of the second dovetail groove, and the second composite material insert is filled in the area between the second dovetail groove and the second composite material skin; an edge of the core material is embedded in an area between the first dovetail groove and the second dovetail groove.
2. A connecting structure of a composite plate and a metal connecting member according to claim 1, wherein:
the first composite material insert comprises a first trapezoid insert, a first Y-shaped insert and a first composite material transition layer, the first composite material transition layer is wrapped on the outer side of the first Y-shaped insert, the first trapezoid insert and the first Y-shaped insert wrapping the first composite material transition layer are spliced to form the first composite material insert, and the first trapezoid insert is arranged close to one side of the first composite material skin;
the second composite material insert comprises a second trapezoidal insert, a second Y-shaped insert and a second composite material transition layer, the second composite material transition layer is wrapped on the outer side of the second Y-shaped insert, the second trapezoidal insert and the second Y-shaped insert wrapping the second composite material transition layer are spliced to form the second composite material insert, and the second trapezoidal insert is arranged close to one side of the second composite material skin.
3. A connecting structure of a composite plate and a metal connecting member according to claim 2, wherein:
the angle difference between the base angle of one side, close to the first composite material skin, of the first trapezoidal insert and the base angle of the corresponding first dovetail groove is not more than 5 degrees; the angle difference between the base angle of one side, close to the second composite material skin, of the second trapezoidal insert and the base angle of the corresponding second dovetail groove is not more than 5 degrees; the angle difference between the bottom angle of one side, close to the first dovetail groove, of the first Y-shaped insert and the bottom angle of the corresponding first dovetail groove is not more than 5 degrees; the angle difference between the bottom angle of one side, close to the second dovetail groove, of the second Y-shaped insert and the bottom angle of the corresponding second dovetail groove is not more than 5 degrees; the structural dimensions of the first composite insert and/or the second composite insert conform to the following equation:
h=h 1 +h 3 +b；
h=h 2 +b；
h is the height of the first dovetail groove or the second dovetail groove; h is 1 Is the height of the first or second Y-shaped insert; h is 2 Is the height of the first trapezoidal insert or the second trapezoidal insert; h is 3 Is the thickness of the reinforcement material of the first composite transition layer or the reinforcement material of the second composite transition layer; b is a reinforcement of the first composite skin or the second composite skinThe thickness of the material.
4. A connecting structure of a composite plate and a metal connecting member according to claim 2, wherein:
the side wall of the first trapezoidal insert and/or the second trapezoidal insert is/are also provided with a first resin runner, the first resin runner comprises a first transverse resin runner and a first longitudinal resin runner, the first transverse resin runner is arranged along the length direction of the first trapezoidal insert or the second trapezoidal insert, the first longitudinal resin runner is perpendicular to the first transverse resin runner, the first transverse resin runner penetrates through two ends of the length direction of the first trapezoidal insert or the second trapezoidal insert, and the first longitudinal resin runner penetrates through the top and the bottom of the first trapezoidal insert or the second trapezoidal insert;
the first Y-shaped insert is close to the side wall of the first dovetail groove and/or the second Y-shaped insert is close to the side wall of the second dovetail groove, a second resin flow channel is arranged on the side wall of the second Y-shaped insert, the second resin flow channel comprises a second transverse resin flow channel arranged in the length direction of the first Y-shaped insert or the second Y-shaped insert and a second longitudinal resin flow channel perpendicular to the second transverse resin flow channel, the second transverse resin flow channel penetrates through the two ends in the length direction of the first Y-shaped insert or the second Y-shaped insert, and the second longitudinal resin flow channel penetrates through the top and the bottom of the first trapezoidal insert or the second trapezoidal insert.
5. A connecting structure of a composite plate and a metal connecting member according to claim 1, wherein:
the metal connecting piece comprises a first metal plate and a second metal plate, the first metal plate is used for being connected with a composite material plate, the second metal plate is used for being connected with a metal piece, the first dovetail groove and the second dovetail groove are formed in the surface of one side of the first metal plate, the second metal plate is connected with the surface of the other side of the first metal plate, a plurality of reinforcing ribs are arranged between the first metal plate and the second metal plate, and the plurality of reinforcing ribs are arranged at intervals in the length direction of the first metal plate.
6. The utility model provides a connection structure of composite sheet and metal owner hull which characterized in that:
a connection structure comprising a metallic main hull and a composite plate according to any one of claims 1 to 5 and a metallic connection member connected to the metallic main hull by welding or mechanical fastening.
7. A method for connecting a composite plate and a metal connecting piece is characterized by comprising the following steps:
s1, manufacturing a metal connecting piece, and respectively processing a first dovetail groove and a second dovetail groove at two side edges of a connecting surface of the metal connecting piece, wherein the first dovetail groove and the second dovetail groove are arranged along the direction of the side length of the composite plate after connection;
s2, extending one end of a first reinforcing material into the first dovetail groove, and fixing the end of the first reinforcing material in the first dovetail groove through a first composite material insert;
s3, processing a core material, putting the core material at the connecting surface of the metal connecting piece, and extending the first reinforcing material to the surface covering one side of the core material;
s4, extending one end of a second reinforcing material into the second dovetail groove, and fixing the end of the second reinforcing material in the second dovetail groove through a second composite material insert;
s5, extending the second reinforcing material to cover the surface of the other side of the core material;
and S6, setting a mould, paving auxiliary materials for molding, pouring resin materials into the first reinforcing material and the second reinforcing material by adopting a vacuum introduction process, and curing and molding to complete the connection of the composite material plate and the metal connecting piece.
8. A method of joining a composite sheet to a metal joint according to claim 7, wherein:
the first composite insert comprises a first trapezoidal insert, a first Y-shaped insert and a first composite transition layer; the second composite insert comprises a second trapezoidal insert, a second Y-shaped insert and a second composite transition layer;
step S2 specifically includes:
extending one end of a first reinforcing material wrapping a first trapezoidal insert into the first dovetail groove along the inner wall surface of one side of the first dovetail groove, paving the end of the first reinforcing material into the inner bottom surface of the first dovetail groove, and then knocking a first Y-shaped insert wrapping a first composite material transition layer reinforcing material into a space between the first dovetail groove and the first trapezoidal insert by adopting a blunt tool so as to fix the end part of the first reinforcing material in the first dovetail groove;
step S4 specifically includes:
one end of a second reinforcing material wrapping a second trapezoid insert extends into the second dovetail groove along the inner wall face of one side of the second dovetail groove and is paved on the inner bottom face of the second dovetail groove, and then a blunt is adopted to knock a second Y-shaped insert wrapping a second composite material transition layer reinforcing material into a space between the second dovetail groove and the second trapezoid insert, so that the end part of the second reinforcing material is fixed in the second dovetail groove.
9. A method of joining a composite sheet to a metal joint according to claim 8, wherein:
the difference between the bottom angle of one side of the first trapezoidal insert close to the first reinforcing material and the bottom angle of the corresponding first dovetail groove is not more than 5 degrees; the difference between the bottom angle of one side of the second trapezoidal insert close to the second reinforcing material and the bottom angle of the corresponding second dovetail groove is not more than 5 degrees; the angle difference between the bottom angle of one side, close to the first dovetail groove, of the first Y-shaped insert and the bottom angle of the corresponding first dovetail groove is not more than 5 degrees; the angle difference between the bottom angle of one side, close to the second dovetail groove, of the second Y-shaped insert and the bottom angle of the corresponding second dovetail groove is not more than 5 degrees; the structural dimensions of the first composite insert and/or the second composite insert conform to the following equation:
h=h 1 +h 3 +b；
h=h 2 +b；
h is the height of the first dovetail groove or the second dovetail groove; h is a total of 1 Is the height of the first or second Y-shaped insert; h is 2 Is the height of the first trapezoidal insert or the second trapezoidal insert; h is 3 Is the thickness of the first composite transition layer reinforcement or the second composite transition layer reinforcement; b is a thickness of the first reinforcing material or the second reinforcing material.
10. The method for joining a composite sheet to a metal joint according to claim 8, further comprising prior to step S2:
processing a first resin runner on the side wall of the first trapezoidal insert and/or the second trapezoidal insert, wherein the first resin runner is arranged along the length direction of the first trapezoidal insert or the second trapezoidal insert and penetrates through two ends of the first trapezoidal insert or the second trapezoidal insert;
and processing a second resin flow channel on the side wall of the first Y-shaped insert close to the first dovetail groove and/or the side wall of the second Y-shaped insert close to the second dovetail groove, wherein the second resin flow channel is arranged along the length direction of the first Y-shaped insert or the second Y-shaped insert and penetrates through two ends of the first Y-shaped insert or the second Y-shaped insert.
CN202210797681.3A 2022-07-08 2022-07-08 Connecting structure and connecting method for composite material plate and metal connecting piece Active CN114872349B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210797681.3A CN114872349B (en) 2022-07-08 2022-07-08 Connecting structure and connecting method for composite material plate and metal connecting piece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210797681.3A CN114872349B (en) 2022-07-08 2022-07-08 Connecting structure and connecting method for composite material plate and metal connecting piece

Publications (2)

Publication Number Publication Date
CN114872349A CN114872349A (en) 2022-08-09
CN114872349B true CN114872349B (en) 2022-09-13

Family

ID=82682929

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210797681.3A Active CN114872349B (en) 2022-07-08 2022-07-08 Connecting structure and connecting method for composite material plate and metal connecting piece

Country Status (1)

Country Link
CN (1) CN114872349B (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2678546A1 (en) * 1991-07-05 1993-01-08 France Etat Armement METHOD OF INSERTING A METAL BAND IN A STRUCTURE OF COMPOSITE MATERIALS
CN102909866A (en) * 2012-10-24 2013-02-06 中国航空工业集团公司北京航空材料研究院 Method for forming control of long joist axial line of composite material stiffened wall panel
CN104454854B (en) * 2014-11-28 2017-02-22 中国人民解放军海军工程大学 Connecting structure for composite laminated board and metal piece
CN107420386B (en) * 2017-07-31 2019-10-22 中国人民解放军海军工程大学 Composite material and metalwork connection structure
CN107901518B (en) * 2017-12-06 2019-11-01 哈尔滨工程大学 A kind of L-type Composite Sandwich Plates connection structure with metal flexible connector
CN113696511B (en) * 2021-10-27 2022-01-21 北京玻钢院复合材料有限公司 Composite material and metal part dovetail groove integrated forming connecting structure and method
CN114536792B (en) * 2022-04-27 2022-08-12 北京玻钢院复合材料有限公司 Connecting structure and connecting method for composite material part and metal part

Also Published As

Publication number Publication date
CN114872349A (en) 2022-08-09

Similar Documents

Publication Publication Date Title
US8758879B2 (en) Composite hat stiffener, composite hat-stiffened pressure webs, and methods of making the same
CN107225804B (en) Marine metal and sandwich composite material mixed connection structure
CN101067343B (en) Lattice reinforced composite material sandwich structure
CN102470915A (en) Stringer
JP5808112B2 (en) Composite structure and aircraft main wing provided with the same
JP2009508709A5 (en)
CN101954761A (en) Space fiber web reinforced composite material sandwich structural member
US20130236692A1 (en) Composite material structure, and aircraft wing and aircraft fuselage provided therewith
US20050118369A1 (en) Structural sandwich plate members
CN104454854B (en) Connecting structure for composite laminated board and metal piece
CN1745015A (en) Vessel structures and structures in marine vessels
US8182643B2 (en) Large composite structures and a process for fabricating large composite structures
CN114872349B (en) Connecting structure and connecting method for composite material plate and metal connecting piece
US20070264472A1 (en) Sandwich Panel and a Method of Producing a Sandwich Panel
KR20160084684A (en) Composite material panel for ship and menufacturing method thereof
CN114536792B (en) Connecting structure and connecting method for composite material part and metal part
CN110410388B (en) Matching and connecting structure of reinforced composite material and metal material
US9850063B2 (en) Freight floor, freight container, use of a multilayer panel to produce a freight floor, and method for producing a freight floor
AU2007200791A1 (en) Boat construction method
CN109383077A (en) Connection method between vertical honeycomb sandwich panel and preparation method and sandwich plate
CN103786830B (en) Fiberglass laminated deck and its processing technology with strengthening groove
CN116118218A (en) Forming method of grid reinforced foam sandwich composite material component with connecting area
KR20020088112A (en) Frp boat and a building method of frp boat built without mold
CN103786832A (en) GRP (Glass Reinforced Plastic) composite deck and processing technology
CN209649646U (en) Vertical honeycomb sandwich panel

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant