Composite forming method of multifunctional integrated composite material
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A composite material and composite forming technology, used in additive processing, manufacturing tools, processing data acquisition/processing, etc., can solve problems such as complex integral forming, shorten the manufacturing cycle, have strong designability, and ensure integrity and comprehensiveness. performance effect
Active Publication Date: 2021-07-16
BEIJING NAT INNOVATION INST OF LIGHTWEIGHT LTD +1
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[0005] In view of the integrated forming requirements of large-scale structure, high performance and multi-functional composite material components, the present invention aims to provide a composite forming method of multi-functional integrated composite materials, which uses the transition zone to realize composite weaving and Simultaneous dip forming to solve the problem of integral forming of large, complex structures, high performance composite components
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Embodiment 1
[0032] like Figure 4 As shown in the schematic diagram of the composite material curved surface member, using a composite forming method of a multifunctional integrated composite material of the present invention, the weaving forming steps are as follows:
[0033] ① Use CAD and other software to establish the 3D CAD model of the surface component, and divide the 3D CAD model into functional area 1, functional area 2 and transition area;
[0034] ②Functional area 1 is the basic frame and main part of the component, which is formed by the flexible guiding three-dimensional weaving forming process;
[0035] ③Functional area 2 is mainly a few reinforcing ribs on the outer layer of the component, using continuous fiber 3D printing technology;
[0036] ④ According to the performance requirements of functional area 1 and functional area 2, establish the 3D CAD model of transition area 1 between functional area 1 and functional area 2;
[0037] ⑤Using the flexible-guided three-dime...
Embodiment 2
[0041] like Figure 5 As shown in the schematic diagram of the multi-functional integrated composite material component of the complex structure, using a composite forming method of the multi-functional integrated composite material of the present invention, the weaving and forming steps are as follows:
[0042] ① Establishing a three-dimensional CAD model of the complex structural composite material component, and partitioning the three-dimensional CAD model to obtain functional area 1, functional area 2, functional area 3, transition area 1, and transition area 2;
[0043] ②Using 3D printing technology to manufacture transition zone 1 and transition zone 2 of short fiber reinforced composite materials, the density of short fibers in transition zone 1 is distributed in a gradient along the radial direction, and the short fibers in transition zone 2 are evenly distributed;
[0044] ③ Arrange the guide arrays of functional area 1 and functional area 2 through the guide template...
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Abstract
The invention relates to a compound forming method of a multifunctional integrated composite material. According to the different functional requirements of parts and components, partitions are carried out to obtain multiple functional areas and corresponding transition areas. According to the shape requirements of the functional areas, 3D printing or flexible guided three-dimensional The weaving forming process manufactures the transition area, obtains the transition area with adjacent functional area guide template information on both sides, respectively forms the Z-direction reinforcement array of the adjacent functional area on both sides of the transition area, and completes the weaving and forming of all functional areas , to obtain a multi-functional integrated composite material prefabricated body, and perform simultaneous impregnation and curing of a single matrix material or multiple matrix materials to realize the composite forming of a multi-functional integrated composite material. The composite forming method proposed by the present invention adopts different numbers and types of reinforcing bodies, base materials and suitable forming processes for synchronous weaving and forming for different functional areas. At the same time, the preformed transition area can isolate the two functional areas on both sides. It satisfies the simultaneous impregnation of various matrix materials, and on the basis of realizing the overall forming of multifunctional integrated composite materials, it effectively guarantees the respective forming quality, functionality and performance characteristics of different functional areas.
Description
technical field [0001] The invention relates to the field of composite materials, in particular to a method for composite forming of multifunctional integrated composite materials. Background technique [0002] Composite materials are composed of one or more reinforcements and matrix. Different composite materials can be obtained according to different reinforcements and matrix types. For the same reinforcement and matrix material, due to changes in composition, different composite materials can be obtained. Composite materials, especially for three-dimensional structural composite materials, due to different materials, structures, and forming methods, different composite materials can be obtained, thus exhibiting different performance characteristics. Therefore, in addition to the characteristics of lightweight materials such as high specific strength and high specific stiffness, composite materials also have strong designability, which is also a major advantage of composit...
Claims
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