FINITE ELEMENT ANALYSIS OF SiC/SiC COMPOSITE JOINTS BY USING A NEW INTERFACE POTENTIAL

摘要

In order to examine mode-Ⅰ & Ⅱ type fracture behavior of ceramic joints, the interface element was proposed as one of the simple models which represent the mechanism of failure in an explicit manner. It was applied to the analyses of four point bending and asymmetrical bending tests for SiC/SiC composite specimen joined by ARCJoinT™. By using a new type interface potential, which is a coupled function of opening and shear deformations, both the bending and asymmetrical bending tests were simulated and a surface energy at the interface between the joint and composite was estimated to be about 30 N/m.