计算力学学报Issue(4)：501-505,544,6.DOI:10.7511/jslx201404014
单晶有限变形的热力耦合计算模型
A thermo-mechanical coupled model of single crystal for finite deformation
摘要
Abstract
A thermo-mechanical coupled model based on thermodynamic theory is presented .The elastic deformation gradient was chosen as the basic integration variable in this model .The effects of temper-ature ,temperature changing rate and dissipation of plastic deformation are considered in the finite de-formation computation .Compared to the traditional algorithm with the elastic deformation gradient as its basic variable ,this model can reveal the thermal effects .An implicit integration method was chosen to en-sure the numerical stability .T he effects of different heating/cooling rates and strain rates on stress-strain response of 1100 Al single crystal are computed .The results showed that this model can evaluate the variation of anisotropy and stress-strain response for single crystal deformation with changing tem-perature .关键词
单晶体/晶体滑移/热效应/有限变形Key words
single crystal/crystal slip/finite deformation/thermal effects分类
数理科学引用本文复制引用
赵聃,朱祎国,胡平,张万喜..单晶有限变形的热力耦合计算模型[J].计算力学学报,2014,(4):501-505,544,6.基金项目
国家自然科学基金（10932003，11272075）；国家基础性发展规划（2012CB619603，010CB832700）；国家工信部04重大专项（2011ZX04001-21）资助项目． （）
