计算力学学报2017，Vol.34Issue(4)：422-427,6.DOI:10.7511/jslx201704004
基于近场动力学理论的准脆性材料的本构力函数的构建
Construction of the constitutive force function of quasi-brittle materials based on the peridynamic theory
摘要
Abstract
Peridynamic(PD) theory is a new non-local continuum mechanics theory,which can be used for studying material failure.Based on the linear and nonlinear mechanical behavior of failure process of quasi-brittle materials,the basic form constitutive force function of the quasi-brittle material was built by introducing the damage model of bond,which divided the fracture process of the bond into the linear elastic deformation stage and the nonlinear damage deformation stage,into the constitutive force function of the prototype microelastic brittle (PMB) material.Then,a typical quasi-brittle material was used as an example to build this constitutive force function.Experiment and PD numerical simulation of crack growth in rock-like material model with pre-existing single crack at different angles under a compression load were conducted.The results showed that the position of crack initiation and the direction of crack propagation were consistent to some extent,and verified that the constitutive force function of the typical quasi-brittle material was suitable for failure analysis.关键词
近场动力学/键/准脆性材料/PMB/本构力函数Key words
peridynamic/bond/quasi-brittle material/prototype microelastic brittle material/constitutive force function分类
数理科学引用本文复制引用
石宏顺,钱松荣,原群盛,徐婷,张国浩..基于近场动力学理论的准脆性材料的本构力函数的构建[J].计算力学学报,2017,34(4):422-427,6.基金项目
贵州省留学人员科技活动(黔人项目资助合同[2014]13号) （黔人项目资助合同[2014]13号）
贵州省联合基金(黔科合LH字[2014]7624号)资助项目. （黔科合LH字[2014]7624号）
