采用单向耦合的有限元方法预测钛基复合材料界面法向结合强度以及十字形试样内的应力分布。有限元模拟共包括两步:复合材料冷却过程和横向拉伸过程。详细分析了界面杨氏模量和残余热应力对界面径向应力分布的影响,并评定得出SiC/Ti-6Al-4V界面法向结合强度为300MPa。
The unilaterally coupled finite element method was used to evaluate the interfacial normal bond strength and to analysis the stress distribution of SiC/Titanium matrix composites for cruciform specimen. Finite element modeling included two steps: the cooling process of composites and the transverse loading process. The effects of Young's Modulus and residual stresses on the radial stress distribution were discussed in detail. The interracial normal strength of SiC/Ti-6Al-4V was evaluated to be about 300 MPa.