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dui deng ying bian neng mi du xian shang zui da ying li zhun ze de xiu zheng
Author(s): 
Pages: 77-80
Year: Issue:  1
Journal: Chinese Journal of Theoretical and Applied Mechanics

Keyword:  应变能密度开裂载荷最大应力单轴压缩单轴拉伸斜裂纹复合型断裂准则开裂方向周向应力裂纹起始;
Abstract: <正> 本文对文献[1]提出的复合型断裂准则做某些修正,对确定开裂载荷提出一个新的看法。 1.基本想法 裂纹的起始扩展由两个因素决定:一是沿开裂方向θ0,裂纹体储存的应变能大于或等于形成新的裂纹面所需要的能量;二是沿开裂方向周向应力的强度大于或等于材料的断裂韧度KIc。这两个因素是相互联系的,但不能互相代替。这两个条件必须同时满足,
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