Analysis of kink deformation and delamination behavior in layered ceramics

Ceramics that are composed of layers have attracted attention because they are expected to improve the ductility. In this study, we construct a practical model of layered ceramics to deal with both interlayer slip and delamination. The deformation modes and mechanical properties under compression force parallel to the tangential direction of the layers are examined using the particle dynamics method. The effects of the stiffness of in-layer bending, the strength of the interlayer bond, and the stiffness of the elastic support associated with the surrounding materials are studied in detail, as well as the effect of strain rate. It is shown that these parameters have something to do with the criteria of kink deformation and the successive deformation mode. (C) 2016 Elsevier Ltd. All rights reserved.