abaqus导入之后，数据检查出现问题。
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坯料是从另外一个模型里面导入的变形后的坯料，并定义的预定义场，设置没什么问题，但是检查数据的时候出现以下问题，是不是由于导入的坯料之前出现网格畸变？？
The volume of 4 elements is zero, small, or negative. Check coordinates or node numbering, or modify the mesh seed. In the case of a tetrahedron this error may indicate that all nodes are located very nearly in a plane. The elements have been identified in element set ErrElemVolSmallNegZero.
