Mechanical properties prediction of 2D braided ceramic matrix composites under off-axial tension

被引：0
|
作者：
Wang Q. [1 ]
Lin H. [1 ]
Xu Y. [1 ]
机构：
[1] School of Aeronautic Science and Engineering, Beihang University, Beijing
来源：
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2018年 / 35卷 / 12期
关键词：
2D braided ceramic matrix composites; Finite element method; Mechanical properties; Multi-scale analysis; Progress damage;
D O I：
10.13801/j.cnki.fhclxb.20180209.002
中图分类号：
学科分类号：
摘要：
Based on the meso-structure of 2D braided C/SiC composites, two micromechanical models were presented to simulate the progressive damage behavior of 2D braided C/SiC composites that subjected to off-axial tension. The equivalent elastic constants and strength of the carbon fiber/pyrolytic carbon interface/SiC matrix model were calculated by the finite element method and then applied to the yarn/SiC matrix model. The Tsai-Wu failure criteria that considers different damage modes was utilized to set up the progressive damage model, and the stress-strain relation of 2D braided C/SiC composites was simulated. The damage model explains the damage evolution of 2D braided C/SiC composites tows in the complex stress state. The numerical results accurately capture the experimental data, which demonstrates the validity of the proposed analytical model. And this model provides a method to predict the mechanical properties of 2D braided C/SiC composites. © 2018, Editorial Office of Acta Materiae Compositae Sinica. All right reserved.
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页码：3423 / 3432
页数：9
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