Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : December 22, 2018 - December 24, 2018
To facilitate the use of self-healing ceramic materials in mechanical components, a novel numerical simulation method, which can be applied to non-prescribed damage processes, is desired. In this study, we develop a constitutive model to analyze both damage and self-healing processes of self-healing ceramic materials. Specifically, we formulate a self-crack-healing constitutive model for composites of alumina/SiC. An evolution rule for a damage recovery based on the oxidation kinetics is introduced into the conventional isotropic damage model. The proposed constitutive model therefore can describe not only damage process, but also the self-healing process. Then, we apply the proposed model to FEM analysis and its effectiveness is examined though the comparison with the experiment of alumina/ 30 vol.% SiC.
