使用 Abaqus 模拟分析大变形情况时一个经常出现又不容易解决的错误就是单元过度变形（Excessive Element Distortion）。出现该错误模型就会中止运行。虽然 Abaqus 会具体地给出出现过度变形的那些单元（ErrElemExcessDistortion），然而这些信息往往对解决问题并没有多少帮助。
解决 Excessive distortion 的一般思路
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标签： Set
boundary conditions reference regions which contains geometric entities that are not associated with a mesh
When using Bottom-up Mesh in Abaqus, sometimes an error message of “boundary conditions reference regions which contains geometric entities that are not associated with a mesh” may pop up after submit the job. One of my colleague suggested following tip to solve it.
查看 ErrElemExcessDistortion 的 Elements
Abaqus 可能会提示有些 Elements 出现了过度变形，并提示可以通过 element set ErrElemExcessDistortion 查看。即使该模拟中途因错结束，也可以在输出中查看到这些单元。