摘要
由全量理论的弹塑性本构方程出发，提出了一种求线性硬化材料裂纹问题的应力函数解法，并求得了线性硬化材料界面裂纹裂尖附近的弹塑性应力场．
The elastoplastic field near the tip of an interface crack between two linear hardening materials is deduced from the total strain theory. It is found that the elastoplastic stress field still has oscillatory singularity theoretically. However,for the case of H′/E1 the oscillatory index ε nearly vanishes for plane strain state, and it is quite smaller than that of the elastic case and only related to the hardening coefficient for plane stress state. It must be pointed out that the elastoplastic stress field needs two elastoplastic intensity factors to be described, not one parameter, and this is also true for cracks in homogeneous media.
出处
《固体力学学报》
CAS
CSCD
北大核心
1998年第3期278-282,共5页
Chinese Journal of Solid Mechanics
基金
国家教委优秀青年教师基金
关键词
塑性
应力强度因子
界面裂纹
线性硬化
应力场
elastoplasticity, stress intensity factor, interface crack, linear hardening, oscillatory singularity, stress function
