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Method for modeling composite material preform with bionic structure

A composite material and modeling method technology, applied in the field of bionic manufacturing, can solve problems such as incomplete impregnation of composite material preforms, and achieve the effect of solving incomplete impregnation and high stretching

Active Publication Date: 2012-09-26
ADVANCED MFG TECH CENT CHINA ACAD OF MASCH SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to provide a modeling method of composite material prefabricated body with bionic structure to solve the technical problem of incomplete impregnation of composite material prefabricated body in the prior art

Method used

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  • Method for modeling composite material preform with bionic structure
  • Method for modeling composite material preform with bionic structure
  • Method for modeling composite material preform with bionic structure

Examples

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preparation example Construction

[0019] According to a typical implementation of the present invention, the preparation method of the composite material with biomimetic structure comprises the following steps: 1) construct the guide device and determine the fiber winding order based on the loofah structure model obtained by modeling; The determined fiber winding sequence is used to wind the fibers to obtain the bionic loofah structure as a composite material prefabricated body; 3) combining the bionic loofah structure with the matrix to form a composite material; the combination process can adopt the method of impregnation.

[0020] Preferably, the guide device includes a guide template and a plurality of guide sleeve groups, wherein the guide sleeve is fixedly arranged on the guide template, and the guide sleeve is provided with grooves according to the node positions in the structural model of the composite material prefabricated body for accommodating Synthetic fibers.

[0021] Preferably, the material of ...

Embodiment

[0028]First, study the structural characteristics of the loofah, such as the arrangement of holes, the winding mode between fibers, and the combination mode of horizontal and vertical fibers, and then use CAD to design the simulation model, and combine the ANSYS software to debug and improve the established model. On the Z-direction guide sleeve, the fitting groove determined by the position of the occlusal point of the fiber bundle and the guide sleeve is processed, and the processed guide sleeve is arranged on the guide template in an orderly manner according to a certain prefabricated structure requirement, and the reinforcement is strengthened during weaving. The fiber traverses all the grooves of the guide sleeve, that is, the preparation of the prefabricated body is completed. The inner fiber layer of the prefabricated body is closely combined with the Z-direction guide sleeve, and a large number of channels are reserved for the flow of resin and other substrates, which c...

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Abstract

The invention discloses a method for modeling a composite material preform with a bionic structure. The method comprises the following steps of: 1) counting and analyzing space structure characteristic values of loofah sponge to obtain a mean value of the characteristic values; 2) performing modeling on the basis of the mean value of the characteristic values to obtain a primary loofah sponge structure model, wherein the primary loofah sponge structure model comprises a plurality of structural units which are connected; and 3) performing finite element stress analysis on the primary loofah sponge structure model, and structurally regulating the structural units according to a stress deformation nephogram of the primary loofah sponge structure model to obtain a loofah sponge structure model which is used as a structure model of the composite material preform. By using the technical scheme, the composite material preform with the bionic structure can be simulated and constructed; and by the bionic loofah sponge structure, the composite material preform has strong tensile strength, compressive strength and bending strength.

Description

technical field [0001] The invention relates to the field of bionic manufacturing, in particular to a modeling method of a composite material prefabricated body with a bionic structure. Background technique [0002] Composite materials are widely used in aerospace, automobiles, artificial biological tissues and advanced sporting goods due to their good comprehensive performance and small specific gravity. In recent years, with the continuous rise of the level of science and technology, the demand for composite materials in various industries is increasing, and at the same time, the required composite material parts are also developing in the direction of large-scale and complex. This requires that in the preparation process of composite materials, in addition to overcoming the problem of easy delamination of composite materials under stress, the problems of incomplete impregnation such as high porosity and many dry fibers also need to be improved. [0003] The emergence of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 单忠德吴晓川康怀镕
Owner ADVANCED MFG TECH CENT CHINA ACAD OF MASCH SCI & TECH
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