FEM Analysis of internal Stress of Composite Ceramics and Its Toughness Mechanism
二相粒子复合陶瓷内应力的有限元分析及其增韧机理

A plane finite element model was established for two-phase ceramics. The residllal stressdistribution in the model was analyzed, and the variation regularity of internal stress along withthe second phase particle's volumetric proporation was given. The effect to residual stress was alsodiscussed, which is caused by the variation of relation between the thermal expansion coefficientsof the matrices and the second phase particles, the difference between interface stress of theoreticalvalue and calculated one was discussed, and some viewpoints of toughness enhanced mechanismfor this composite material were concluded.