【摘要】 采用Ｃａｏ［１］型应变能密度函数，基于ＴｏｔａｌＬａｇｒａｎｇｅ描述的非线性有限元方程，对平面应力Ⅰ型橡胶材料的单边裂纹试件，在裂纹尖端附近计算Ｊ积分，当Ｊ积分达到临界Ｊｃ时，裂纹失稳破坏，即用Ｊ积分准则来预测其临界载荷，适当选取本构常数，有限元计算表明：与实验［２］和工程上常用的Ｍｏｏｎｅｙ［３］型本构的分析结果吻合最后，讨论了本构常数的变化对Ｊ积分的影响更多还原

【Abstract】 Using Gao’s energy function, J -integral for plane stress rubber materials is calculated with finite element solutions.Its formulation is based on the large deformation.The results obtaind are in agreement with the experimental data,and the influence of material constants is discussed.更多还原