A fracture-mechanics-based non-local damage model for crack prediction in brittle materials
Description of crack initiation and crack growth is a principal aim of numerical simulations in fracture mechanics.In this work,we have established a non-local damage model based on the fracture mechanics for brittle materials.This non-local model associates the classical failure criteria for non-cracked materials and the Griffith criterion for cracked materials throughout a non-local approach.Consequently,this model can be used to predict the crack initiation as well as the crack growth.The maximal principal stress criterion was considered in the proposed non-local framework.It was shown that after the non-local treatment,the classical failure criteria can be used in the prediction of crack initiation and crack growth with different failure mechanisms.By using the proposed model,we carried out several numerical simulations on different specimens in order to assess the fracture process in brittle materials.From these studies,we can conclude that the present model can be used to deal with crack initiation and crack growth in brittle materials with high accuracy and efficiency.
fracture crack damage non-local model
Zhang Xiao-Bing Li Jia
LAMI,Université Blaise Pascal de Clermont,Montlu(c)on,France LSPM,CNRS UPR 3407,Université Paris XⅢ,Villetaneuse,France
国际会议
北京
英文
1-10
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）