CN105775102A - Discontinuous lattice cored and double-skin cylindrical shell structure for aerospace and preparation method thereof - Google Patents
Discontinuous lattice cored and double-skin cylindrical shell structure for aerospace and preparation method thereof Download PDFInfo
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- CN105775102A CN105775102A CN201610184534.3A CN201610184534A CN105775102A CN 105775102 A CN105775102 A CN 105775102A CN 201610184534 A CN201610184534 A CN 201610184534A CN 105775102 A CN105775102 A CN 105775102A
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- eyelid covering
- stem
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- preparation
- double
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
- B64C1/06—Frames; Stringers; Longerons ; Fuselage sections
- B64C1/12—Construction or attachment of skin panels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
- B64C2001/0054—Fuselage structures substantially made from particular materials
- B64C2001/0081—Fuselage structures substantially made from particular materials from metallic materials
Abstract
The invention discloses a discontinuous lattice cored and double-skin cylindrical shell structure for aerospace and a preparation method thereof. The discontinuous lattice cored and double-skin cylindrical shell structure for the aerospace comprises a first skin, a second skin and a plurality of cored structures, wherein the cored structures are arranged between the first skin and the second skin in the form of discontinuous lattice; each cored structure comprises four cored columns with same lengths; one ends of the cored columns are integrally gathered and fixed on the internal surface of the first skin; and the other ends of the cored columns are all fixed on the internal surface of the second skin and positive projections, on the internal surface of the second skin, of the cored columns can form a cross. The invention has the advantages of light weight, high strength, impact resistance, good sound absorbing effect and the like.
Description
Technical field
The present invention relates to field of aerospace technology, particularly relate to a kind of discontinuous dot matrix of Aero-Space and add double; two eyelid covering barrel shell structure of core and preparation method thereof.
Background technology
Structured material (Structuralmaterials), is a kind of materials chemistry, physical property not changing and forming, only by the engineering material system changing the bigger macro property income of acquisition of node configuration on little yardstick partly or wholly.It integrates loss of weight, multifunction, the cheap property of design, modern age multiple commercial aircraft, satellite, carrier rocket, bullet train (EMUs) ocean engineering and near space hypersonic aircraft structure are respectively provided with the prospect of being widely applied.Especially along with the high speed development of modern advanced manufacturing technique, this material system increasingly receives the concern of Chinese scholars and industry.Harvard University, MIT, University of Virginia, univ cambridge uk etc. have carried out more deep research work all in succession, wherein all achieving a lot of achievement in research on prepared by the theory of structural analysis, method and laboratory, these achievements in research have been used for thermal protection structure of ship hull construction, bullet train frame structure, high-grade precision machine tool critical piece structure, recycling carrier rocket (RLV) etc..
As, the barrel shell structure being applied on aerospace field rocket body structure is exactly the application form of comparatively typical structured material, it is while can bearing certain load, there are the strength and stiffness higher compared to other structures, but it is as the development of Aero-Space cause, while the barrel shell structural-load-carrying capacity requiring rocket body increases, more pay close attention to its total quality to reduce, namely, while ensureing that barrel shell structure meets bearing capacity, how effectively to reduce its construction weight and then become the important content of current research.
Summary of the invention
In view of the defect that prior art exists, the invention aims to provide a kind of discontinuous dot matrix of Aero-Space to add the double; two eyelid covering barrel shell structure of core, this pair of eyelid covering barrel shell structure is while increasing bearing capacity, reduce further the total quality of himself, the defect of Aero-Space cause high speed development demand can not be mated solving existing stressed-skin construction.
To achieve these goals, technical scheme:
A kind of Aero-Space add the double; two eyelid covering barrel shell structure of core with discontinuous dot matrix, and described pair of eyelid covering barrel shell structure includes the first eyelid covering；Second eyelid covering；And some being arranged in discontinuous latticed form adds cored structure between described first eyelid covering and the second eyelid covering；It is characterized in that:
The described cored structure that adds includes: what four root length degree were consistent adds stem stem, add stem stem one end described in each pool one and be fixed on described first eyelid covering inner surface, the other end be both secured on described second eyelid covering inner surface and make each described in add stem stem and drop on the orthographic projection on the second eyelid covering inner surface and can become cross；Described first eyelid covering inner surface and the second eyelid covering inner surface each mean and are welded with the surface adding stem stem.
Further, adding stem stem described in adopts solid metallic materials to prepare.
It is another object of the present invention to also provide the preparation method that the discontinuous dot matrix of a kind of Aero-Space adds the double; two eyelid covering barrel shell structure of core, it comprises the steps:
The preparation of S1, the first eyelid covering and the second eyelid covering:
Select two blocks of steel plates meeting required size specification, respectively as the first eyelid covering and the second eyelid covering, and each described steel plate is carried out grinding process；
S2, that the first eyelid covering after grinding process and the second eyelid covering are carried out chemical oxidation is painted；
Described chemical oxidation is painted refers to any one method adopted in existing dichromate titration, mixing sodium salt method, sulfuration method, acidic oxidation method and alkaline oxygenated method, so that the first eyelid covering forms corresponding film color with the second eyelid covering by chemical oxidation, and then improve the first eyelid covering and the second skin-surface precision and roughness.
S3, add cored structure and the preparation of double; two eyelid covering barrel shell structure:
S31, add the preparation of cored structure: that selects four root length degree consistent adds stem stem, add, described in each, the same position place that stem stem one end is welded to the inner surface of the first eyelid covering, make simultaneously each described in add the stem stem other end be generally aligned in the same plane and each described in add the stem stem orthographic projection on this plane that falls and can become cross, the inner surface of described first eyelid covering refers to and is welded with the first skin-surface adding stem stem；
S32, the preparation of double; two eyelid covering barrel shell structure first stage: multiple cored structures that add are welded to the inner surface of the first eyelid covering successively with discontinuous latticed form, add cored structure and all make according to the preparation process adding cored structure as described in S31 described in each；
S33, double; two eyelid covering barrel shell structure second stage preparation:
To all add stem stem and be each welded on the inner surface of the second eyelid covering the preparation completing double; two eyelid covering barrel shell structures；The inner surface of described second eyelid covering refers to and is welded with the second skin-surface adding stem stem.
nullFurther，Before carrying out S3，On the inner surface of the first eyelid covering, some the first eyelid covering welding position marks adding stem stem welding position for assisted lookup are identified in advance according to corresponding discontinuous latticed form，Or while identifying the first eyelid covering welding position mark in advance，It is designated reference point respectively with each first eyelid covering welding position，On the inner surface of the second eyelid covering, for assisted lookup add stem stem welding position four the second eyelid covering welding position marks corresponding with this reference point are identified according to the cored structure welding parameter that adds set，The described cored structure welding parameter that adds refers to and is designated reference point with a certain first eyelid covering welding position，In conjunction with being adopted, the length value adding stem stem and the default end points respectively adding stem stem required when being generally aligned in the same plane simultaneously adds the angle value that stem stem is formed with this same plane，Concrete coordinate position corresponding when four end points adding stem stem obtained are generally aligned in the same plane and orthographic projection on this plane becomes cross.
Preferably, the first described eyelid covering welding position mark refers to and realizes mark by drilling operating.
Compared with prior art, beneficial effects of the present invention: the present invention adds the double; two eyelid covering barrel shell structure of core for a kind of Aero-Space with discontinuous dot matrix, it can improve load-carrying properties under the premise reducing weight, there is the advantage that can bear bigger load under lower quality, therefore there is higher economic worth and application prospect；Barrel shell structure prepared by preparation method of the present invention has the advantages such as lightweight, intensity is high, shock-resistant, sound-absorbing effect is good.
Accompanying drawing explanation
Fig. 1 is the structural representation of of the present invention pair of eyelid covering barrel shell structure；
Fig. 2 is the side-looking structural representation of of the present invention pair of eyelid covering barrel shell structure；
Fig. 3 is the lattice structure schematic diagram of of the present invention pair of eyelid covering barrel shell structure.
In figure: 1, the first eyelid covering, 2, add cored structure, 21, add stem stem, the 3, second eyelid covering.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing, the present invention is further elaborated.
As shown in Figure 1-Figure 3, can not mating the demand of Aero-Space cause high speed development for solving existing stressed-skin construction, the present invention devises a kind of discontinuous dot matrix of Aero-Space and adds the double; two eyelid covering barrel shell structure of core, and described pair of eyelid covering barrel shell structure includes the first eyelid covering 1；Second eyelid covering 3；And some being arranged in discontinuous dot matrix (or being called that regular discrete is arranged) form adds cored structure 2 between described first eyelid covering 1 and the second eyelid covering 3；It is characterized in that:
The described cored structure 2 that adds includes: what four root length degree were consistent adds stem stem 21, add stem stem 21 one end described in each pool one and be fixed on described first eyelid covering 1 inner surface, the other end be both secured on described second eyelid covering 3 inner surface and make each described in add the orthographic projection that stem stem 21 drops on the second eyelid covering 3 inner surface and can become cross；Described first eyelid covering inner surface and the second eyelid covering inner surface each mean and are welded with the surface adding stem stem；Add cored structure adopt above-mentioned hollow frame body structure be beneficial to realize eyelid covering subtract material loss of weight, its impact resistance under weight equivalents is best, and available space is big, is beneficial to filling interlayer dielectric.
Further, adding stem stem described in adopts solid metallic materials to prepare.
The present invention also provides the preparation method that the discontinuous dot matrix of a kind of Aero-Space adds the double; two eyelid covering barrel shell structure of core, and it comprises the steps:
The preparation of S1, the first eyelid covering and the second eyelid covering:
Selected two blocks of steel plates meeting required size specification, as sheared, two dimensions are completely the same and the corrosion resistant plate of 3mm thickness, respectively as the first eyelid covering and the second eyelid covering, and each described steel plate are carried out grinding process；
S2, surface oxidation treatment: the first eyelid covering after grinding process and the second eyelid covering are carried out chemical oxidation painted and carry out chamfering；
Described chemical oxidation is painted refers to any one method adopted in existing dichromate titration, mixing sodium salt method, sulfuration method, acidic oxidation method and alkaline oxygenated method, so that the first eyelid covering forms corresponding film color with the second eyelid covering by chemical oxidation, and then improve the first eyelid covering and the second skin-surface precision and roughness.
S3, add cored structure and the preparation of double; two eyelid covering barrel shell structure:
S31, add the preparation of cored structure: select the solid steel rod adding stem stem such as diameter 2mm that four root length degree are consistent, add, described in each, the same position place that stem stem one end is welded to the inner surface of the first eyelid covering, make simultaneously each described in add the stem stem other end be generally aligned in the same plane and each described in add the stem stem orthographic projection on this plane that falls and can become cross, the inner surface of described first eyelid covering refers to and is welded with the first skin-surface adding stem stem；
S32, the preparation of double; two eyelid covering barrel shell structure first stage: multiple cored structures that add are welded to the inner surface of the first eyelid covering successively with discontinuous latticed form, add cored structure and all make according to the preparation process adding cored structure as described in S31 described in each；
S33, double; two eyelid covering barrel shell structure second stage preparation:
To all add stem stem and be each welded on the inner surface of the second eyelid covering the preparation completing double; two eyelid covering barrel shell structures；The inner surface of described second eyelid covering refers to and is welded with the second skin-surface adding stem stem；And the outer surface of described first eyelid covering and the second eyelid covering is carried out grinding process.
nullSimultaneously before carrying out S3，Described preparation method also includes: identify some the first eyelid covering welding position marks adding stem stem welding position for assisted lookup on the inner surface of the first eyelid covering according to corresponding discontinuous latticed form in advance，Or while identifying the first eyelid covering welding position mark in advance，It is designated reference point respectively with each first eyelid covering welding position，On the inner surface of the second eyelid covering, for assisted lookup add stem stem welding position four the second eyelid covering welding position marks corresponding with this reference point are identified according to the cored structure welding parameter that adds set，The described cored structure welding parameter that adds refers to and is designated reference point with a certain first eyelid covering welding position，In conjunction with being adopted, the length value adding stem stem and the default end points (or being referred to as stigma) respectively adding stem stem are required when being generally aligned in the same plane adds the angle value that stem stem is formed with this same plane，Concrete coordinate position corresponding when four end points adding stem stem obtained are generally aligned in the same plane and the orthographic projection on this plane that falls becomes cross.
After the first eyelid covering and the second eyelid covering consistency from top to bottom, by utilizing the first eyelid covering welding position mark and corresponding four the second eyelid covering welding position marks each to be added stem stem and is welded to the first eyelid covering and the second eyelid covering inner surface, greatly simplify the complexity of the welding process of double; two eyelid covering barrel shell structure, improve the preparation efficiency of barrel shell structure.
Preferably, the first described eyelid covering welding position mark refers to and realizes mark by drilling operating.
In sum, the present invention is effectively increased existing eyelid covering barrel shell structural-load-carrying capacity, achieve in the technical specification bearing bigger load by less quality, when discontinuous dot matrix adds the effect loaded of the double; two eyelid covering barrel shell structure of core, internal lattice structure improves bearing capacity and shock resistance, meanwhile, discontinuous dot matrix structure adds the double; two eyelid covering barrel shell structure of core and can reduce the stressed-skin construction weight realizing meeting under load-up condition.
The above; it is only the present invention preferably detailed description of the invention; but protection scope of the present invention is not limited thereto; any those familiar with the art is in the technical scope that the invention discloses; it is equal to replacement according to technical scheme and inventive concept thereof or is changed, all should be encompassed within protection scope of the present invention.
Claims (5)
1. Aero-Space add the double; two eyelid covering barrel shell structure of core with discontinuous dot matrix, and described pair of eyelid covering barrel shell structure includes the first eyelid covering；Second eyelid covering；And some being arranged in discontinuous latticed form adds cored structure between described first eyelid covering and the second eyelid covering；It is characterized in that:
The described cored structure that adds includes: what four root length degree were consistent adds stem stem, add stem stem one end described in each pool one and be fixed on described first eyelid covering inner surface, the other end be both secured on described second eyelid covering inner surface and make each described in add stem stem and drop on the orthographic projection on the second eyelid covering inner surface and can become cross.
2. Aero-Space according to claim 1 add the double; two eyelid covering barrel shell structure of core with discontinuous dot matrix, it is characterised in that:
The described stem stem that adds adopts solid metallic materials to prepare.
3. the preparation method that Aero-Space add the double; two eyelid covering barrel shell structure of core with discontinuous dot matrix, it comprises the steps:
The preparation of S1, the first eyelid covering and the second eyelid covering:
Select two blocks of steel plates meeting required size specification, respectively as the first eyelid covering and the second eyelid covering, and each described steel plate is carried out grinding process；
S2, that the first eyelid covering after grinding process and the second eyelid covering are carried out chemical oxidation is painted；
S3, add cored structure and the preparation of double; two eyelid covering barrel shell structure:
S31, add the preparation of cored structure: that selects four root length degree consistent adds stem stem, add, described in each, the same position place that stem stem one end is welded to the inner surface of the first eyelid covering, make simultaneously each described in add the stem stem other end be generally aligned in the same plane and each described in add the stem stem orthographic projection on this plane that falls and can become cross；
S32, the preparation of double; two eyelid covering barrel shell structure first stage: multiple cored structures that add are welded to the inner surface of the first eyelid covering successively with discontinuous latticed form, add cored structure and all make according to the preparation process adding cored structure as described in S31 described in each；
S33, double; two eyelid covering barrel shell structure second stage preparation:
To all add stem stem and be each welded on the inner surface of the second eyelid covering the preparation completing double; two eyelid covering barrel shell structures；The inner surface of described second eyelid covering refers to and is welded with the second skin-surface adding stem stem.
4. the preparation method that a kind of Aero-Space according to claim 3 add the double; two eyelid covering barrel shell structure of core with discontinuous dot matrix, it is characterised in that:
nullBefore carrying out S3，On the inner surface of the first eyelid covering, some the first eyelid covering welding position marks adding stem stem welding position for assisted lookup are identified in advance according to corresponding discontinuous latticed form，Or while identifying the first eyelid covering welding position mark in advance，It is designated reference point respectively with each first eyelid covering welding position，On the inner surface of the second eyelid covering, for assisted lookup add stem stem welding position four the second eyelid covering welding position marks corresponding with this reference point are identified according to the cored structure welding parameter that adds set，The described cored structure welding parameter that adds refers to and is designated reference point with a certain first eyelid covering welding position，In conjunction with being adopted, the length value adding stem stem and the default end points respectively adding stem stem required when being generally aligned in the same plane simultaneously adds the angle value that stem stem is formed with this same plane，Concrete coordinate position corresponding when four end points adding stem stem obtained are generally aligned in the same plane and orthographic projection on this plane becomes cross.
5. the preparation method that a kind of Aero-Space according to claim 4 add the double; two eyelid covering barrel shell structure of core with discontinuous dot matrix, it is characterised in that:
The first described eyelid covering welding position mark refers to and realizes mark by drilling operating.
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| CN201610184534.3A CN105775102A (en) | 2016-03-25 | 2016-03-25 | Discontinuous lattice cored and double-skin cylindrical shell structure for aerospace and preparation method thereof |
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| CN201610184534.3A CN105775102A (en) | 2016-03-25 | 2016-03-25 | Discontinuous lattice cored and double-skin cylindrical shell structure for aerospace and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108376182A (en) * | 2016-12-20 | 2018-08-07 | 中国航空制造技术研究院 | A kind of reinforcement increasing material manufacturing micro unit and stressed-skin construction binding performance control method |
| CN109624437A (en) * | 2018-11-08 | 2019-04-16 | 首都航天机械有限公司 | A kind of profile-followed inner flow passage truss core thermal protection struc ture of band, design and manufacturing method |
| WO2019169939A1 (en) * | 2018-03-09 | 2019-09-12 | 深圳光启尖端技术有限责任公司 | Stealthy explosion-proof structure |
| CN110625335A (en) * | 2019-09-02 | 2019-12-31 | 北京星航机电装备有限公司 | Welding deformation control method for high-aspect-ratio framework skin wing type component |
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