CONFIGURATIONAL FORCES AND THEIR APPLICATION TO DYNAMIC FRACTURE IN THE FRAMEWORK OF THERMOMECHANICS

摘要：

A unified configurational force approach applied to dynamic fracture is developed in the framework of thermomechanics.The balance equations of configurational force are established in conjunction with those of standard force and entropy to characterize the coupled motion of material particle and crack tip.The theoretical investigation shows that the negative projection of internal configurational force concentrated at crack tip in the direction of crack propagation coincides with the energy release rate whether in purely mechanical or in thermomechanical process.This result is an extension to the thermomechanics case of Gurtins finding for purely mechanical process.

关键词： Configurational force thermomechanics energy release rate crack driving force

作者: Qilin He Linzhi Wu

作者单位: Center for Composite Materials,Harbin Institute of Technology,Yi-Kuang Street,Harbin,150080,P.R.China

会议类型: 国际会议

会议名称: 第二届国际非均质材料力学会议(The Second International Conference on Heterogeneous Material Mechanics)

会议地点: 安徽黄山

会议语种:英文

页码: 1259-1262

在线出版日期: 2008-06-03（万方平台首次上网日期，不代表论文的发表时间）