Fiber reinforced ceramic matrix composite microstructure accurate modeling and modulus calculation method

A composite material, fiber reinforced technology, applied in the direction of calculation, design optimization/simulation, special data processing application, etc., can solve problems such as differences in weaving methods and differences in test results

Active Publication Date: 2019-04-05
SOUTHWEST JIAOTONG UNIV
View PDF10 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In view of the randomness of its microstructural defects and the differences in weaving methods at different positions, there are some differences in the test results

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fiber reinforced ceramic matrix composite microstructure accurate modeling and modulus calculation method
  • Fiber reinforced ceramic matrix composite microstructure accurate modeling and modulus calculation method
  • Fiber reinforced ceramic matrix composite microstructure accurate modeling and modulus calculation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0084] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0085] like figure 1 As shown, a method for accurate modeling and modulus calculation of the microstructure of fiber-reinforced ceramic matrix composites includes the following steps:

[0086] S1. Establish the fiber-scale finite element model of continuous silicon carbide fiber-reinforced silicon carbide ceramic matrix composites; the specific implementation method is: use the level set method and unit automatic discrete technology to cut and distinguish the fiber-scale model into carbon fiber, Three components of pyrolytic carbon and SiC matrix. According to related studies, the cross-sectional structure of tooth enamel at the micron scale is as follows: figure 2 As shown, based on the level set method and element automatic discretization technology, the fiber scale model is cut and divided into three components: carbon fiber, pyrolytic c...

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
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a fiber reinforced ceramic matrix composite microstructure accurate modeling and modulus calculation method. The method comprises the following steps S1, establishing a fiber filament scale finite element model; S2, establishing a finite element model of cellosilk scale microcracks and pore distribution; S3, calculating a unit stiffness matrix of each unit; S4, calculatingaverage stress and average strain of all units of the fiber filament scale finite element model; S5, establishing a fiber bundle scale woven body model; S6, establishing a finite element model of poredistribution in the fiber bundle scale braided body; S7, calculating a unit stiffness matrix in each unit; And S8, calculating average stress and average strain of all units of the fiber bundle scalewoven body model. According to the method, the microstructure characteristics, the microcracks and the pores of the woven body with the fiber size and the fiber bundle size are comprehensively considered, the transverse isotropic material characteristics of the fiber bundles at different weaving positions are effectively set, and a more accurate macroscopic effective modulus value can be obtainedthrough calculation.

Description

technical field [0001] The invention belongs to the field of calculation and research of macroscopic elastic modulus of continuous silicon carbide fiber-reinforced silicon carbide ceramic-based composite material, and in particular relates to a method for accurate modeling of microstructure of continuous fiber-reinforced ceramic-based composite material and automatic macroscopic modulus prediction method. Background technique [0002] Continuous silicon carbide fiber reinforced silicon carbide ceramic matrix composites have been widely used in the manufacture of aircraft, spacecraft, rockets, etc. Key components for engines and nuclear power. At present, various research institutions at home and abroad have carried out many pioneering research work in related fields such as material preparation, performance improvement, and manufacturing technology. Generally speaking, there is still a certain gap between China and Western countries in the basic research, industrialization ...

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
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor 刘建涛蔡兴瑞万逸飞冯志强曾庆丰关康周仲荣
Owner SOUTHWEST JIAOTONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap