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Design method of woven fabric composite material properties based on controllable microstructure

A composite material and physical parameter technology, applied in design optimization/simulation, calculation, electrical digital data processing, etc., can solve problems such as increasing design and processing costs, changing manufacturing and processing technology, shortening the design cycle, increasing production costs, The effect of simplifying the optimization process

Inactive Publication Date: 2017-05-10
魏东
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Problems solved by technology

However, it is very difficult to design the physical parameters of braided composite materials through parametric analysis or experiments; and the microstructure design based on topology optimization, although it has unique advantages in the spatial arrangement of microstructure materials and structures, will change The existing manufacturing and processing technology of braided composite materials will increase the cost of design and processing to a certain extent

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Design method of woven fabric composite material properties based on controllable microstructure
  • Design method of woven fabric composite material properties based on controllable microstructure
  • Design method of woven fabric composite material properties based on controllable microstructure

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Embodiment Construction

[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0031] The invention is a controllable microstructure-based method for designing physical property parameters of braided composite materials. Firstly, a finite element (FEM) model for analyzing the mesoscopic heat transfer characteristics of braided composite materials is established. The reasonable selection of representative cells has an important impact on the prediction of material physical parameters. built as attached figure 1 a Finite element model of a representative cell of a woven composite. In the calculation, the fiber filament is T300, the matrix material is epoxy resin, the fiber filament diameter is 7 μm, and the axial length is 300 μm. The detailed parameters are shown in Table 1. A rotationally symmetric boundary is applied on the two faces in the x and y directions that meet the fiber in the z direction, and a symmetric boundary is applied...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention provides a design method of woven fabric composite material properties based on controllable microstructure. The design method utilizes universal single-cell thought and establishes mesoscopic / macroscopic heat transfer / mechanical an analysis model; based on mesh deformation method, through the meso-scale of typical periodic cell elements and the change in the form of the cell, and combined with multiscale analysis and multi-objective optimization, the design method is capable of quickly effectively meeting the requirements of targeted design and the 'lightweight' pursuit. The technology has the advantages of being low in cost and short in design period to gain physical property parameter which suits the need of 2D, 2.5D, 5D, and 3D woven fabric composite material.

Description

technical field [0001] The invention belongs to the field of composite material preparation, in particular to a method for designing physical property parameters of a braided composite material with a controllable microstructure. Background technique [0002] Reinforced silicon carbide ceramic matrix composites have a series of excellent properties such as high strength, high hardness, high temperature resistance, and low density, and have become a new generation of high-temperature thermal structural materials with great development prospects in the aerospace field. Braided carbon fiber reinforced silicon carbide composites are widely used in heat-resistant parts due to their excellent high-temperature performance, such as the expansion section of large launch vehicles, various missile engine components, the head of the space shuttle and the leading edge of the wing, etc., which not only requires weaving Composite materials are subjected to high loads and also to high tempe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/23G06F2113/12
Inventor 魏东石友安杜雁霞桂业伟肖光明杨肖峰李伟斌刘深深
Owner 魏东
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