Effect of thermally activated energy on dislocation emission from a blunted crack tip
Thermally activated processes are of fundamental importance for the understanding and modeling of strength of structural materials.The effect of thermally activated on dislocation emission from an elliptically blunted crack tip is investigated.Critical stress intensity factors were simulated for edge dislocation emission from a blunt crack under mode Ⅰ and mode Ⅱ loading conditions at high temperature.The results show the impact of thermally activated processes is remarkable,which can affect the value of the critical stress intensity factors for dislocation emission,but doesnt alter the emission angle.The applied electric load will increase with decreasing temperature.
thermally activated blunted crack dislocation emission
X. Zeng Q.H. Fang Y.W. Liu
College of Mechanical and Vehicle Engineering,Hunan University,Changsha,410082 Hunan Province,PR Chi College of Mechanical and Vehicle Engineering,Hunan University,Changsha,410082 Hunan Province,PR Chi
国际会议
北京
英文
1-9
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）