提交abaqus 的vumat时使用连续壳单元计算，总是出现如下的错误，求解答，谢谢?
浏览：1487 回答：3
Bad Material definition in element number 83011 instance PART-1-1 zero or negative initial dilatational modulus caused by bad material data. Please check your material input and any initial conditions if necessary.
北望逸尘 
