标题：Simulation of crack propagation in single phase ceramic tool materials
作者：Zhou, Tingting; Huang, Chuanzhen
作者机构：[Zhou, Tingting] Qilu Univ Technol, Sch Mech & Automot Engn, Jinan 250353, Peoples R China.; [Huang, Chuanzhen] Shandong Univ, Key Lab High Efficien 更多
通讯作者地址：[Zhou, TT]Qilu Univ Technol, Sch Mech & Automot Engn, Jinan 250353, Peoples R China.
来源：COMPUTATIONAL MATERIALS SCIENCE
关键词：Ceramic tool material; Microstructure; Crack propagation; Voronoi; tessellation; Cohesive element model
摘要：The crack growth simulation contributes to the investigation of the relationship between fracture toughness and microstructure of ceramic tool materials. In this paper, the Voronoi tessellation is used to represent microstructures of single phase ceramic tool materials. Cohesive element model has been built up to conduct the modeling of cracking propagation by embedding cohesive elements with fracture criteria in grains and along grain boundaries. Both single phase ceramic tool materials with pores and without pores are studied. The influences of grain size and porosity on fracture mode and fracture resistance are analyzed respectively. And the simulation results have a good agreement with the experimental phenomena. (C) 2015 Elsevier B.V. All rights reserved.