CN117484902A - Paving method capable of ensuring continuity of composite material spar fiber - Google Patents
Paving method capable of ensuring continuity of composite material spar fiber Download PDFInfo
- Publication number
- CN117484902A CN117484902A CN202311344100.1A CN202311344100A CN117484902A CN 117484902 A CN117484902 A CN 117484902A CN 202311344100 A CN202311344100 A CN 202311344100A CN 117484902 A CN117484902 A CN 117484902A
- Authority
- CN
- China
- Prior art keywords
- paving
- spar
- unidirectional tape
- width
- bending
- 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.)
- Pending
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000000835 fiber Substances 0.000 title claims abstract description 32
- 238000005452 bending Methods 0.000 claims abstract description 52
- 239000004744 fabric Substances 0.000 claims abstract description 29
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 26
- 239000004917 carbon fiber Substances 0.000 claims abstract description 26
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 23
- 238000010586 diagram Methods 0.000 claims abstract description 6
- 238000005520 cutting process Methods 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 238000010924 continuous production Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 description 10
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000002844 continuous effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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
- B29C70/04—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
-
- 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
- B29C70/302—Details of the edges of fibre composites, e.g. edge finishing or means to avoid delamination
-
- 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
- B29C70/34—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 shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
- B29C70/342—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 shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using isostatic pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3076—Aircrafts
- B29L2031/3085—Wings
-
- 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
- Y02T50/00—Aeronautics or air transport
- Y02T50/40—Weight reduction
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The invention discloses a paving method capable of ensuring continuous fibers of a composite material spar, wherein the composite material spar comprises a spar web and a spar cap, two ends of the web are provided with bends, and the bending angle is alpha; the flanges at the two sides of the web are edge strips; the paving method comprises the following steps: s1, opening a digital model of a spar in three-dimensional software, measuring the length and the width of a flange, and drawing a rectangular material sheet in the three-dimensional software according to the measured value; s2, loading a rectangular material sheet blanking diagram through a blanking machine, and cutting out a unidirectional tape prepreg material sheet for paving and pasting to form a rim strip, wherein fibers in the material sheet are parallel to the long side of the rectangle; s3, paving carbon fiber fabrics on the die, paving material sheets on the fabrics, and repeatedly paving the fabrics in an alternating mode of a plurality of fabrics and a plurality of unidirectional tapes; when the prepreg is laid and stuck: firstly, paving a non-bending area on the surface of the fabric, and then paving a bending area, wherein when paving the bending area: splitting two ends of the material sheet into a plurality of narrow bands and then paving the narrow bands on a fabric; s4, making bags after paving and pasting are completed, and solidifying.
Description
Technical Field
The invention relates to the technical field of composite material molding, in particular to a paving method capable of ensuring continuous fiber of a composite material spar.
Background
The carbon fiber composite material has good fatigue resistance, corrosion resistance, designability and weight reduction efficiency. At present, the spar is used as a large-scale stress member of an airplane, and the carbon fiber composite material is used for manufacturing the spar, so that the effects of reducing weight, improving lifting load and prolonging service life can be achieved.
At present, most of the composite material spars are manufactured and molded by adopting carbon fiber unidirectional tape materials and carbon fiber fabrics; wherein: the spar web part is mainly paved by using carbon fiber fabrics, and the spar cap is used as an important stress part and is mainly paved by using 0-degree unidirectional tapes. In the actual production process, CATIA or fiber software is widely used to derive the sheet program for part lay-up; and when the spar web structure is bent, if CATIA or fiber sim software is continuously used, the derived blanking pattern of the spar cap region prepreg is bent, as shown in the following figure 1; cutting the bent unidirectional tape prepreg according to the guided blanking diagram by a machine, and paving the bent unidirectional tape prepreg on a die by a follow-up paving personnel; however, according to the curved blanking graph generated by the three-dimensional software, the fibers of the bending part of the cap material sheet are completely discontinuous, and the fibers of the cap region of the bending part are completely discontinuous by paving the formed composite material spar cap in this way, which can seriously affect the mechanical property of the composite material spar, reduce the bearing capacity and are inconsistent with the design intention of designers.
Disclosure of Invention
The invention aims at: aiming at the problems that when a composite material spar structure is bent, the prior molding method easily causes discontinuous spar cap fibers in a bending area, which can seriously affect the mechanical property of the composite material spar and reduce the bearing capacity of the composite material spar, the design of the paving method can ensure the continuous paving of the composite material spar fibers, and solve the problems.
The invention is realized by the following technical scheme:
the method is characterized in that the composite material spar comprises a spar web and a spar cap, wherein bending areas are arranged at two ends of the spar web, and the bending angle of the bending areas is alpha; the spar caps are flanging structures arranged on two sides of the spar web and bend along the shape of the spar web;
the paving method comprises the following steps:
s1, opening a digital model of a composite material spar in three-dimensional software, measuring the length and the width of a spar cap, and drawing a rectangular material sheet in the three-dimensional software according to the measured values;
s2, loading the drawn rectangular material sheet blanking diagram through a blanking machine, and cutting out a unidirectional tape prepreg sheet for paving and pasting to form a spar cap, wherein fibers in the unidirectional tape prepreg sheet are parallel to the long side of the rectangle, and the angle is 0 degree (namely, the unidirectional tape prepreg sheet adopts 0 degree unidirectional tape);
s3, paving a plurality of layers of carbon fiber fabrics for forming the spar web on a paving die according to the requirements of a drawing, paving the unidirectional tape prepreg sheets on two sides of the surface of the carbon fiber fabrics, and repeatedly paving in an alternating mode of the plurality of layers of carbon fiber fabrics and the plurality of layers of unidirectional tape prepreg sheets until all paving is completed;
wherein: when the unidirectional tape prepreg sheet is laid up: firstly, paving a non-bending area on the surface of the carbon fiber fabric, then paving the non-bending area, and when paving the bending area: splitting two ends, corresponding to the bending areas, of the unidirectional tape prepreg sheet to form a plurality of narrow tapes, and then paving the narrow tapes on the carbon fiber fabrics of the bending areas;
s4, manufacturing a vacuum bag after all the paving is completed, and setting curing parameters according to the standard requirements of paving materials for curing.
Further, a method for continuously paving the spar fiber of the composite material can be provided: the carbon fiber fabric prepreg layup may be blanked and laid using a software derived blanking map.
Further, a method for continuously paving the spar fiber of the composite material can be provided: the spar web consists of a straight part and bending parts arranged at two ends of the straight part; and a bending angle alpha is formed between the bending part and the straight part.
Furthermore, a continuous laying method for the spar fiber of the composite material can be ensured: setting the width of the narrow band according to the bending angle alpha at the two ends of the spar web, wherein the larger the bending angle alpha is, the smaller the width of the narrow band is; if the angle alpha is more than or equal to 3 degrees and less than or equal to 6 degrees, the width of the narrow band is set to be 20.0-30.0 mm.
Furthermore, a continuous laying method for the spar fiber of the composite material can be ensured: if the angle alpha is more than or equal to 6 degrees and less than or equal to 10 degrees, the width of the narrow band is set to be 10.0-20.0 mm.
Furthermore, a continuous laying method for the spar fiber of the composite material can be ensured: if α > 10 °, the width of the narrow band is set to < 10.0mm.
Further, a method for continuously paving the spar fiber of the composite material can be provided: the width of the upper unidirectional tape prepreg sheet is not larger than that of the lower unidirectional tape prepreg sheet.
Specifically, a plurality of layers of unidirectional tape prepreg are laid from bottom to top in a stacking way, and the width of the upper layer of unidirectional tape prepreg sheet is slightly smaller than that of the lower layer of unidirectional tape prepreg sheet.
The invention has the beneficial effects that:
(1) When the method is used for designing the unidirectional tape prepreg blanking graph for paving the spar caps, the traditional software derivation method is not used, and the length and the width of the spar caps in the digital-to-analog model of the composite spar are measured by adopting a mapping mode, so that a rectangular blanking graph parallel to fibers in the unidirectional tape prepreg sheet is formed, the continuity of the fibers is ensured, and the influence on the mechanical properties of the composite spar due to the discontinuity of the fibers is avoided.
(2) The method of the invention firstly starts to lay and paste from a central area (non-bending area), normally lays and pastes unidirectional tape prepreg sheets in a central straight area, and when the unidirectional tape prepreg sheets are laid and paste in a bending area, the unidirectional tape prepreg sheets are split into a plurality of narrow bands with equal widths due to poor deformation capability of the unidirectional tape with large width, and the narrow bands prepreg sheets are folded for a certain angle alpha by utilizing the micro deformation capability of the narrow bands and then are laid and paste on the carbon fiber fabric at the positions corresponding to the spar caps. The invention fully utilizes the micro bending capability of the unidirectional tape prepreg sheet in the narrow-band shape, thereby ensuring that the fibers in the unidirectional tape prepreg sheet in the bending area are continuous, and not affecting the mechanical properties of the formed composite material spar.
(3) The unidirectional tape prepreg blanking graph woven by the method has the advantages that the material sheets are regular rectangles, typesetting is convenient, the material utilization rate is improved, and the raw material cost is saved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a blanking diagram of a prior art spar cap zone prepreg derived using CATIA or fiber sim software;
FIG. 2 is a schematic structural view of a composite airfoil having a bending structure;
FIG. 3 is a drawing of a rectangular web drawn by three-dimensional software in accordance with the method of the present invention;
FIG. 4 is a schematic view of the structure of a unidirectional tape prepreg sheet according to the present invention;
fig. 5 is a schematic illustration of the lay-up of the method of the present invention.
The marks in the figure: a composite material spar 1, a rectangular material sheet 2, a unidirectional tape prepreg material sheet 3, a 4-paving die, a spar web 1-1, a spar cap 1-2, a narrow tape 3-1, a straight part 1-1-1 and a bending part 1-1-2.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper," "lower," "left," "right," "top," "bottom," and the like indicate orientations or positional relationships, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may include one or more of the feature, either explicitly or implicitly. Moreover, the terms "first," "second," and the like, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein.
Example 1
As shown in fig. 2 to 5, a method for laying down and attaching a composite spar fiber continuously is provided: the composite spar 1 comprises: a spar web 1-1 and spar caps 1-2 of a flanging-like structure arranged along two sides of the spar web 1-1; the spar web 1-1 is composed of a straight part 1-1-1 and bending parts 1-1-2 arranged at two ends of the straight part 1-1, wherein a bending angle alpha is formed between the bending parts 1-1-2 and the straight part 1-1;
the paving method comprises the following steps:
s1, opening a digital model of a composite material spar 1 by using CATIA three-dimensional software, measuring a bending angle alpha of a spar web 1-1, analyzing a composite material layering structure of the spar web 1-1 and a spar cap 1-2, measuring the length and the width of the spar cap 1-2, and drawing a rectangular material sheet 2 in AutoCAD three-dimensional software according to the measured length and width values of the spar cap 1-2;
s2, loading a blanking diagram of the drawn rectangular material sheet 2 through a blanking machine, and cutting a unidirectional tape prepreg sheet 3 for paving and forming the spar caps 1-2 according to the size of the rectangular material sheet 2, wherein fibers in the unidirectional tape prepreg sheet 3 are parallel to the long sides of the rectangle, and the angle is 0 degree (namely, 0 degree unidirectional tape is adopted for the unidirectional tape prepreg sheet 3);
s3, paving a plurality of layers of carbon fiber fabrics used for forming the spar web 1-1 on a paving mold 4 according to the requirements of a drawing (the carbon fiber fabric prepreg paving layer can be subjected to blanking and paving by using a blanking chart derived by CATIA or fiber sim software), then paving the unidirectional tape prepreg sheets 3 on two sides of the surface of the carbon fiber fabrics, and then repeatedly paving in an alternating mode of a plurality of layers of carbon fiber fabrics and a plurality of layers of unidirectional tape prepreg sheets until all paving is completed;
wherein: when the unidirectional tape prepreg sheet 3 is laid up: firstly, paving a non-bending area on the surface of the carbon fiber fabric, then paving the non-bending area, and when paving the bending area: splitting two ends, corresponding to the bending areas, of the unidirectional tape prepreg sheet 3 to form a plurality of narrow tapes 3-1, and then paving the narrow tapes on carbon fiber fabrics of the bending areas;
s4, manufacturing a vacuum bag after all the paving is completed, and setting curing parameters according to the standard requirements of paving materials for curing.
Specifically, in the method provided in the above example 1, when the unidirectional tape prepreg sheet 3 is laid down: ensuring that a flat area at the center of a spar web is firstly paved; when paving in a bending position: firstly splitting two ends of a unidirectional tape prepreg sheet 3 into a plurality of narrow tapes 3-1, and then determining the width of the narrow tapes 3-1 according to the bending angle alpha of a spar web 1-1 and the micro deformation capacity of the unidirectional tape prepreg sheet 3 under the narrow tape shape, wherein the larger the bending angle alpha is, the smaller the width of the narrow tapes 3-1 is: when the bending angle alpha is 3-6 degrees, the width of the narrow band 3-1 is 20.0-30.0 mm; when the bending angle alpha is 6-10 degrees, the width of the narrow band 3-1 is 10.0-20.0 mm; when the bending angle α is > 10 °, the width of the narrow band 3-1 is set to < 10.0mm.
Specifically, in step S3 of the above-described embodiment 1: the width of the upper unidirectional tape prepreg sheet 3 may be slightly smaller than the width of the lower unidirectional tape prepreg sheet 3; this design enables the several unidirectional tape prepreg sheets 3 to form a staggered structure like a ladder when laid up and pasted, so that a smooth transition can be formed between the carbon fiber fabric covered on the several unidirectional tape prepreg sheets 3 and the laminated several unidirectional tape prepreg sheets 3, which is beneficial to eliminating the risk of interlayer bridging.
The method for paving the composite material spar fully utilizes the micro bending capability of the unidirectional tape prepreg sheet 3 under the narrow-band shape, and the two ends of the unidirectional tape prepreg with larger width originally are split into a plurality of narrow-band shapes and then bent into a certain angle alpha for paving, so that the fiber continuous effect of the unidirectional tape material in the spar cap region can be ensured, the mechanical property of the formed composite material spar is effectively ensured, and the design intent of a designer is met.
The invention fully utilizes the micro bending capability of the unidirectional tape prepreg in the narrow-band shape, so that the fibers in the narrow-band are still continuous after the narrow-band is bent by a certain angle alpha, and the serious reduction of mechanical properties and the great reduction of the bearing capacity of the composite spar caused by the discontinuity of the unidirectional tape prepreg fibers in the spar cap are avoided.
The number of plies of each of the carbon fiber fabric and the unidirectional tape prepreg may be determined according to the design requirements of the actual composite spar in step S3 of example 1 described above.
The above-described preferred embodiments of the present invention are only for illustrating the present invention, and are not to be construed as limiting the present invention. Obvious changes and modifications of the invention, which are introduced by the technical solution of the present invention, are still within the scope of the present invention.
Claims (7)
1. A method for continuously paving composite material spar fibers, which is characterized in that a composite material spar (1) comprises a spar web (1-1) and a spar cap (1-2), wherein two ends of the spar web (1-1) are provided with bending areas, and the bending angle of the bending areas is alpha; the spar caps (1-2) are flanging structures arranged on two sides of the spar web (1-1);
the paving method comprises the following steps:
s1, opening a digital model of a composite material spar (1) in three-dimensional software, measuring the length and the width of a spar cap (1-2), and drawing a rectangular material sheet (2) in the three-dimensional software according to the measured values;
s2, loading a blanking diagram of the drawn rectangular material sheet (2) through a blanking machine, and cutting out a unidirectional tape prepreg sheet (3) for paving and forming the spar cap (1-2), wherein fibers in the unidirectional tape prepreg sheet are parallel to the long side of the rectangle, and the angle is 0 degree;
s3, paving a plurality of layers of carbon fiber fabrics for forming the spar web (1-1) on a paving mold (4), paving the unidirectional tape prepreg sheets (3) on two sides of the surface of the carbon fiber fabrics, and repeatedly paving in an alternating mode of a plurality of layers of carbon fiber fabrics and a plurality of layers of unidirectional tape prepreg sheets until all paving is completed;
wherein: when the unidirectional tape prepreg sheet (3) is laid up: firstly, paving a non-bending area on the surface of the carbon fiber fabric, then paving the non-bending area, and when paving the bending area: splitting two ends of the unidirectional tape prepreg sheet (3) to form a plurality of narrow bands (3-1), and then paving the narrow bands on the carbon fiber fabrics in the bending area;
s4, manufacturing a vacuum bag after all the paving is completed, and setting curing parameters according to the standard requirements of paving materials for curing.
2. A method of laying down and enabling the continuous production of composite spar fibres as claimed in claim 1 wherein the carbon fibre fabric prepreg layup is laid down and laid down using a software derived blanking map.
3. A method of laying a composite spar fibre continuously according to claim 1, characterised in that the spar web (1-1) is formed by a straight portion (1-1-1) and bent portions (1-1-2) arranged at both ends of the straight portion (1-1-1); a bending angle alpha is formed between the bending part (1-1-2) and the straight part (1-1-1).
4. A method of laying down composite spar fibres continuously as claimed in claim 3, in which the width of the narrow strip (3-1) is set in accordance with the angle of inflection α at both ends of the spar web (1-1), the greater the angle of inflection α the smaller the width setting of the narrow strip (3-1); if the angle alpha is more than or equal to 3 degrees and less than or equal to 6 degrees, the width of the narrow band (3-1) is set to be 20.0-30.0 mm.
5. A method of laying down composite spar fibres continuously as claimed in claim 4 in which the width of the narrow band (3-1) is set to 10.0 to 20.0mm if α is 6 ° or less and 10 °.
6. A method of laying down composite spar fibres continuously as claimed in claim 4, in which the width of the narrow band (3-1) is set to < 10.0mm if α > 10 °.
7. A method of laying down composite spar fibres continuously according to claim 1, characterised in that the width of the upper unidirectional tape prepreg sheet (3) is not greater than the width of the lower unidirectional tape prepreg sheet (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311344100.1A CN117484902A (en) | 2023-10-17 | 2023-10-17 | Paving method capable of ensuring continuity of composite material spar fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311344100.1A CN117484902A (en) | 2023-10-17 | 2023-10-17 | Paving method capable of ensuring continuity of composite material spar fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117484902A true CN117484902A (en) | 2024-02-02 |
Family
ID=89666784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311344100.1A Pending CN117484902A (en) | 2023-10-17 | 2023-10-17 | Paving method capable of ensuring continuity of composite material spar fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117484902A (en) |
-
2023
- 2023-10-17 CN CN202311344100.1A patent/CN117484902A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11752709B2 (en) | Reinforcing structure for a wind turbine blade | |
| EP3626603B1 (en) | Composite fabric wing spar with interleaved tape cap plies | |
| US11660830B2 (en) | Contoured composite stringers | |
| US20110311778A1 (en) | Bead-Stiffened Composite Parts | |
| CN109732946B (en) | Preparation process of wind power blade with blade root prefabricated part | |
| US20110186209A1 (en) | Complex geometries made of composite material and forming process for same | |
| CN109822937B (en) | Bundling tool and production method of blade girder adopting same | |
| CN117484902A (en) | Paving method capable of ensuring continuity of composite material spar fiber | |
| CN109878105B (en) | Fiber layering method for wind power blade manufacturing | |
| CN112141315A (en) | Aircraft control surface composite material wallboard structure and forming system and method thereof | |
| EP2965890B1 (en) | Roll forming composite components | |
| CN207291015U (en) | Composite material " work " shape stringer wall panel structure forming frock | |
| WO2023029150A1 (en) | Wind turbine blade having improved trailing edge structure and fabrication method therefor | |
| US20230141573A1 (en) | Optimized spar cap structure for wind turbine blade | |
| US20230072647A1 (en) | Optimized interlayer for a spar cap for a wind turbine blade | |
| WO2014031043A1 (en) | A reinforced structure and a method for manufacturing a reinforced structure | |
| CN115503260A (en) | Core material filling method | |
| CN113454334A (en) | Fan blade with reinforcing strips and manufacturing method thereof | |
| CN112895519B (en) | Forming process of upper box body of composite power battery | |
| CN221113104U (en) | SMMC structure, battery case upper cover and battery case | |
| CN113464357B (en) | Strip, beam, blade and wind turbine generator | |
| CN213936443U (en) | Box structure on compound power battery | |
| CN116038956A (en) | Forming die and forming method for annular composite material fuselage frame | |
| CN115256996A (en) | Layering method for cavity area of composite material blade | |
| CN110217054B (en) | All-steel radial tire with 0-degree bead reinforcing layer |
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 |