摘要
在应变软化材料的主裂缝尖端存在一断裂过渡区。本文利用加权积分法 ,给出无限大板含一中心穿透直裂纹有均匀拉应力作用时的断裂过渡区长度、裂纹尖端张开位移和 J积分值 ,并与带状屈服模型相比较。
There is a fracture process zone near the crack tip for the tensile strain softening materials.In this paper,it is obtained to the fracture process zone(PZ) length,the crack opening displacement(CTOD) and the J integral value for a central cracked panel under uniform tension by using the weighted intergral method.The numerical results are compared between the present and the Dugdale model.
出处
《石家庄铁道学院学报》
2000年第3期4-6,23,共4页
Journal of Shijiazhuang Railway Institute
关键词
断裂过渡区
应变软化
J积分
长度张开位移
fracture process zone fictitious crack model strain softening crack tip opening displacement J integral
