RELATION BETWEEN ENERGY RELEASE RATE AND STRESS INTENSITY FACTOR FOR MODE I CRACK UNDER TRIAXIAL STRESS STATE
Relation between energy release rate and stress intensity factor for mode I crack under triaxial stress state is analyzed in detail. Firstly the crack-tip fields for mode I crack under axial tension in a three-dimensional (3D) isotropic continuum are derived by aid of the equilibrium and compatibility equations. Then the relation between energy release rate and stress intensity factor for mode I crack under triaxial stress state is obtained in explicit form by recourse to the analytic expressions of the afore-mentioned crack-tip fields. The present solutions for plane stress and plane strain states coincide very well with the classic elasticity solutions for plane stress and plane strain states respectively. Also the present work can be applied to theoretically calculating the fracture toughness of ductile metals, and the evaluated fracture toughness values have a good agreement with the tested values.
Yuting He Feng Li Ronghong Cui Hongpeng Li Chaohua Fan
Engineering College, Air Force Engineering University, Xi’an, Shaanxi 710038, P.R.China.
国际会议
第九届工程结构完整性国际会议(The Ninth International Conference on Engineering Structural Integrity Assessment)
北京
英文
2007-10-15（万方平台首次上网日期，不代表论文的发表时间）