9+1 Is to carbon fiber composite three-dimensional material structure
Technical Field
The invention belongs to the technical field of composite material three-dimensional structures, and particularly relates to a 9+1-direction carbon fiber composite three-dimensional material structure.
Background
At present, the three-dimensional multidirectional woven composite material is mutually penetrated and interwoven to form a three-dimensional net-like structure, so that the fatal defects of low interlayer strength and easiness in layering of the traditional laminated composite material can be fundamentally overcome; meanwhile, the composite of the multiple materials can improve certain characteristics of the composite materials so as to achieve an ideal state, the composite manufacturing of the multiple materials can also improve the added value and market competitiveness of products, realize the effective utilization of multiple materials, reduce the cost, promote the upgrading and updating of manufacturing industry, develop wider application fields and the like, gradually enter the research field, and have very wide application prospects. However, the mesoscopic structures of the materials are very complex, exhibit high non-uniformity and anisotropy of the various materials, and in practical manufacturing, especially in environments where the conditions of use are demanding, the existing composite materials have the following drawbacks:
Firstly, in the manufacturing process, most multi-material composites still stay on more traditional processes such as layering, hot pressing and the like, and although a 3D printing technology can be introduced, the multi-angle stress is not adopted, so that the shock resistance is limited.
Secondly, in the selection of materials, the interfacial bonding and stress distribution of different materials are also forbidden in the selection of materials due to the different properties of multiple materials, such as mechanical properties, thermal properties, electrical properties and the like, and the layering phenomenon is inevitably generated in the use process by using the traditional processes of layering, hot pressing and the like, so that the strength and the stability are reduced.
Thirdly, the multi-material prefabricated body manufactured by layering and other methods has disordered internal paths, is easy to generate resistance, and leads to difficult discharge of internal gas when the subsequent medium needs to be penetrated, so that the manufactured composite material is difficult to discharge because an air pocket is formed inside, and the product is damaged when high temperature, high pressure or high-speed impact is encountered.
Accordingly, in view of the above problems of the prior art, a need exists for a multi-material composite three-dimensional structure that overcomes the above disadvantages, and is particularly applicable to large-scale three-dimensional structures
Disclosure of Invention
The invention provides a 9+1-direction carbon fiber composite three-dimensional material structure, which aims to solve the problems existing in the prior art that multi-material composite materials are manufactured by layering or hot pressing and the like, and provides a mesoscopic three-dimensional structure which has stable structure, uniform stress, strong impact resistance and capability of being manufactured into a large volume.
The invention is realized in such a way that a 9+1-direction carbon fiber composite three-dimensional material structure comprises an alpha profile group, a beta profile group, a gamma profile group and a first profile vertically arranged, wherein the alpha profile group comprises three groups of alpha profiles, the included angle between each group of alpha profiles and the horizontal plane is alpha, the beta profile group comprises three groups of beta profiles, and the included angle between each group of beta profiles and the horizontal plane is beta; the gamma profile groups comprise three groups of gamma profiles, and the included angle between each group of gamma profiles and the horizontal plane is gamma;
The projections of the three groups of alpha profiles, the three groups of beta profiles and the three groups of gamma profiles on the horizontal plane respectively enclose an equilateral triangle, and the projection of the first profile on the horizontal plane is close to each equilateral triangle;
and one first section bar, the alpha section bar group, the beta section bar group and the gamma section bar group form a group of structural units.
Preferably, the first section bar, each group of alpha section bar, each group of beta section bar and each group of gamma section bar are respectively arranged in parallel along the plane of the first section bar, each group of alpha section bar, each group of beta section bar and each group of gamma section bar to form a row, and a plurality of rows are arranged in parallel to form a plurality of groups of structural units which are sequentially arranged, thereby forming a three-dimensional composite structure.
Preferably, the included angles between the projections of each two alpha profiles, each two beta profiles and each two gamma profiles on the horizontal plane are respectively 120 degrees.
Preferably, the sections of the first section bar, the alpha section bar, the beta section bar and the gamma section bar are round, hexagonal, rectangular or irregular sections.
Preferably, the included angle α is 19.5 °.
Preferably, the included angle β is 41.5 °.
Preferably, the included angle γ is-10 °.
Advantageous effects
Compared with the prior art, the invention has the beneficial effects that: the invention relates to a 9+1-direction carbon fiber composite three-dimensional material structure, which aims at the problem of uneven stress intensity caused by mutually overlapping weaving layers in a multi-material composite process, and because a 9+1-direction structural body is adopted, all sectional materials of an alpha sectional material group, a beta sectional material group and a gamma sectional material group surround a vertical sectional material at equal angles, the structural bodies are not easy to distort and deform, are similar to a net shape in macroscopic view and are mutually inserted, so that the structure is stable, the structural body is stressed from any aspect, the sectional materials in other directions are decomposed and stressed evenly, and the structure can be copied and expanded into a net structure, so that the structural body is stressed evenly, can bear multi-direction impact force, and has higher impact damage tolerance and fracture toughness. The 9+1-direction multi-material woven three-dimensional material structure body provided by the invention is mutually intersected, is not easy to twist, has high strength, can be copied and expanded, has uniform structure, and is uniformly stressed in a certain direction; open channels exist among all wires, so that the subsequent process treatment is very smooth.
Drawings
Fig. 1 is a schematic perspective view of a first profile and an α profile set according to the present invention;
FIG. 2 is a schematic plan view of a first profile and an α -profile set according to the present invention;
fig. 3 is a schematic perspective view of a first profile and β profile set according to the present invention;
FIG. 4 is a schematic plan view of a first profile and β -profile set according to the present invention;
Fig. 5 is a schematic perspective view of a first profile and gamma profile set according to the present invention;
FIG. 6 is a schematic plan view of a first profile and gamma profile set according to the present invention;
fig. 7 is a schematic perspective view of a structural unit in the present invention.
In the figure: 1-first profile, 2-alpha profile, 3-beta profile and 4-gamma profile.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1-7, the present invention provides a technical solution: the composite three-dimensional material structure of the carbon fiber in the 9+1 direction comprises an alpha profile group 2, a beta profile group 3, a gamma profile group 4 and a first profile 1 which is vertically arranged, wherein the alpha profile group 2 comprises three groups of alpha profiles, the included angle between each group of alpha profiles and the horizontal plane is alpha, the beta profile group 3 comprises three groups of beta profiles, and the included angle between each group of beta profiles and the horizontal plane is beta; the gamma profile groups 4 comprise three groups of gamma profiles, and the included angles between each group of gamma profiles and the horizontal plane are all gamma.
The profiles can be made of reinforcing materials such as glass fiber, carbon fiber, boron fiber, aramid fiber, silicon carbide fiber, asbestos fiber, whisker, metal wire, hard fine particles and the like, can be made of metal matrix materials such as common aluminum, magnesium, copper, titanium and alloys thereof and the like, and can also be made of non-metal matrix materials such as synthetic resin, rubber, ceramics, graphite, carbon and the like.
The projections of the three groups of alpha profiles, the three groups of beta profiles and the three groups of gamma profiles on the horizontal plane respectively enclose an equilateral triangle, and the projection of the first profile 1 on the horizontal plane is close to each equilateral triangle. The first section bar 1 may be near the side of the equilateral triangle or near the vertex of the equilateral triangle, and the projection of the vertically arranged first section bar 1 on the horizontal plane cannot completely coincide with the vertex of the equilateral triangle due to the certain size of the section bar, and the first section bar is slightly deviated.
One of the first profile 1, the alpha profile group 2, the beta profile group 3 and the gamma profile group 4 form a group of structural units.
Further, the first section bar 1, each group of α section bars, each group of β section bars and each group of γ section bars are respectively arranged in parallel along the plane where they are located to form a plurality of rows, and are arranged in parallel to each other to form a plurality of groups of sequentially arranged structural units, thereby forming a three-dimensional composite structure.
In this embodiment, each profile consists of a plurality of rows, the projections of each row on the vertical projection plane overlap, each row of profiles is distributed on the same plane, the planes of the profiles in each row are parallel to each other, each row of profiles consists of a plurality of profiles, and the roots are parallel to each other.
And a plurality of intersection points are formed between each vertically arranged first section bar 1 and other section bars, and at each intersection point, the vertically arranged first section bar 1 is intersected with three groups of alpha section bars, beta section bars and gamma section bars which are respectively from different section bar groups and form included angles with the horizontal plane.
Further, the included angles between the projections of each two alpha profiles, each two beta profiles and each two gamma profiles on the horizontal plane are 120 degrees respectively.
Further, the sections of the first section bar 1, the alpha section bar, the beta section bar and the gamma section bar are round, hexagonal, rectangular or irregular sections.
Further, the included angle alpha is 19.5 degrees, the included angle beta is 41.5 degrees, and the included angle gamma is-10 degrees.
In the prior art, the materials are selected by adopting the processes of layering, hot pressing and the like, the respective performances of various materials are required to be comprehensively considered, the materials with similar performances are selected for compounding, adverse factors affecting the strength and the stability, such as layering and the like, in the using process can be avoided as much as possible, the inside of various different materials cannot be compounded in a real sense, the sectional materials, including fiber bundles, are formed by the technology, and the interpenetrating technology is used for mutually crossing and wrapping, so that the different materials can penetrate into the inside of other different materials, and the selecting range of the different materials is greatly increased.
Aiming at the problems that the intermediate medium is easy to encounter resistance and the internal gas is not smoothly discharged due to the processes of multi-material layer paving, hot pressing and the like, the substrate formed by the technology has open channels between parallel sectional materials, and sectional materials are vertically inserted in the middle of the similar equilateral triangle, so that the intermediate medium is easier to permeate into the substrate, and the internal gas can be discharged basically in the vertical direction, so that the inlet and outlet resistance is smaller, and the large-size substrate is easier to produce.
During manufacturing, a rectangular or square or hexagonal positioning die is required to be prepared, and machining precision is accurate to ensure smooth penetration of the sectional materials. In order to be able to be inserted smoothly, it is necessary to ensure that the section accuracy of the profile is ensured within a certain accuracy range and that the surface is smooth without defects such as gaps and bulges, then the profile is placed in the mould according to each layer in sequence, the profile is placed in the mould in the vertical direction first, then placed in the mould in the left-right, front-rear bottom areas and alternated from several sides until all the profile is fully filled, the bottom areas of the left-right, front-rear and other multiple sides can be placed first, then the profile in the vertical direction can be placed, or can be alternated, finally the partial areas lacking in the up-down direction can be placed one by one according to the required length of the position because of different lengths, and the cuboid, square or hexagonal 9+1-direction fine three-dimensional structure formed in this way can be placed.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.