Determinant is zero or nearly zero”，请教高手！！！ [复制链接]

本人最近用PLAXIS在做一个海堤的分析，表面是1.5米深的粘土（c=0，phi=22）。
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底层用了土工格栅，然后0.3米高的沙垫层，再加一层土工格栅，然后再填0.7米高。 p1X lni%=  
以上均为PLASTIC ANALYSIS，随后在做固结的时候，为什么总是出现：“Determinant is zero or nearly zero”，请教高手！！！

sometimes determinant is related to Jacobi matrix. if the area of a  few  elements is close to zero or aspect ratio is too large, it may lead to the zero determinant problem. v\\Z
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but in plaxis, some of the restrictions has been settled. you may upload your detailed information for discussion.

thanks thanks

还是不懂啊～～～～