Thermal stress analysis of the brittle material considering cracking by finite clement method

Abstract

The authors have developed the finite element (FE) analysis program based on the implicit method to consider elasto-plasticity and cracking of brittle materials. In this study, we added thermal stress analytic function to the program because it is indispensable to simulating the mechanical behavior of the refractory under high temperatures. We focus on the sandwich structure consisting of two materials as a numerical example and derive its theoretical solution of displacement, stress, and strain to verify the validity of the thermal stress analysis. This paper shows the verification of the FE program by comparing numerical results with the theoretical ones. In addition, this paper shows the effect of the FE division and the length of the sandwich structure on the numerical results.