ansys后处理结果求解中，错误如下，不知怎样修改

jingdaijiarent

The supplied nonlinear material properties produced an incorrect material tangent matrix.Please check your TB input carefully.A very small yield stress may cause this failure.
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The above error is non-recoverable by ANSYSANSYS run terminated by the indicated error Current data base saved if possible.
还望高人指点一番

mwz

是不是曲线斜率和弹性模量不一致