材料科学
复合材料
极限抗拉强度
残余应力
热膨胀
热的
压力(语言学)
工作(物理)
语言学
机械工程
物理
工程类
哲学
气象学
作者
Qi Zhang,Jingran Ge,Binbin Zhang,Chunwang He,Zhijian Wu,Jun Liang
标识
DOI:10.1016/j.ceramint.2021.10.085
摘要
Due to the mismatch of the thermal expansion coefficients between the matrix and yarns, thermal residual stress will appear in C/SiC composites. In this paper, a progressive damage model was used to predict the thermal-mechanical behavior of C/SiC composites and reveal the failure mechanism. Firstly, the properties of the composites under tensile load were tested at three different temperatures in vacuum. Then, the elastic-plastic progressive damage constitutive laws were used and implemented by a user-defined subroutine UMAT in ABAQUS. The thermal residual stress evolution in the cooling and heating processes was characterized. Finally, the stress-strain curves of the composites under tensile load at different temperatures were studied. The effects of thermal residual stress on the tensile properties and progressive damage process of C/SiC composites were revealed sequentially. This work can give design guidance for strengthening of C/SiC composites.
科研通智能强力驱动
Strongly Powered by AbleSci AI