摘要
基于能量释放率研究Ⅲ型裂纹平面应变条件下的J积分能量表达式。采用有限元软件模拟了工字梁腹板受扭转时裂纹裂尖应力奇异场,通过数值模拟得出裂纹区的应力、位移分布状态,并计算应力强度因子和J积分,从而验证表达式的可行性。
In this paper,based on energy release rate,the Jintegral energy expressions of crack typeⅢunder plane strain condition is studied.The stress singular field of the crack tip in I-beam web is simulated by finite element software,the stress and displacement distribution of the crack zone are obtained by numerical simulation,and the stress intensity factor and the Jintegral are calculated,the feasibility of the expression is verified.
出处
《机械工程与自动化》
2014年第4期59-60,共2页
Mechanical Engineering & Automation
关键词
工字型梁
应力强度因子
裂纹
J积分
I-shaped beam
stress intensity factor
crack
Jintegral
