请过路高手不吝赐教：－）
问题是这样的：提交作业后，警告框中有如下的信息：“The aspect ratio for 1500 elements exceeds 100 to 1. The elements have been identified in element set WarnElemAspectRatio.
The strain increment has exceeded fifty times the strain to cause first yield at 1 points
The strain increment has exceeded fifty times the strain to cause first yield at 11 points
The system matrix has 21 negative eigenvalues.
The strain increment has exceeded fifty times the strain to cause first yield at 18 points
Excessive distortion at a total of 21 integration points in solid (continuum) elements
The strain increment has exceeded fifty times the strain to cause first yield at 4 points
The system matrix has 3 negative eigenvalues.
The strain increment has exceeded fifty times the strain to cause first yield at 12 points
The system matrix has 25 negative eigenvalues.
The strain increment has exceeded fifty times the strain to cause first yield at 14 points
Excessive distortion at a total of 20 integration points in solid (continuum) elements
The strain increment has exceeded fifty times the strain to cause first yield at 3 points
The system matrix has 9 negative eigenvalues.
The strain increment has exceeded fifty times the strain to cause first yield at 8 points
Excessive distortion at a total of 12 integration points in solid (continuum) elements
The system matrix has 4 negative eigenvalues.
The strain increment has exceeded fifty times the strain to cause first yield at 1 points
The system matrix has 14 negative eigenvalues.
The strain increment has exceeded fifty times the strain to cause first yield at 9 points
Excessive distortion at a total of 1 integration points in solid (continuum) elements
The system matrix has 1 negative eigenvalues.
The strain increment has exceeded fifty times the strain to cause first yield at 7 points
Excessive distortion at a total of 12 integration points in solid (continuum) elements
The strain increment has exceeded fifty times the strain to cause first yield at 14 points
Excessive distortion at a total of 21 integration points in solid (continuum) elements
The strain increment has exceeded fifty times the strain to cause first yield at 3 points
Excessive distortion at a total of 2 integration points in solid (continuum) elements
The strain increment has exceeded fifty times the strain to cause first yield at 5 points
Excessive distortion at a total of 13 integration points in solid (continuum) elements
The system matrix has 1 negative eigenvalues.
The strain increment has exceeded fifty times the strain to cause first yield at 7 points
The system matrix has 13 negative eigenvalues.
The strain increment has exceeded fifty times the strain to cause first yield at 9 points
Excessive distortion at a total of 17 integration points in solid (continuum) elements”
:'( :'( :'(
显然总结一下，除了各句中的具体数字不同这外，主要有以下几个句型：
第一句：The aspect ratio for 1500 elements exceeds 100 to 1. The elements have been identified in element set WarnElemAspectRatio.
第二句：The strain increment has exceeded fifty times the strain to cause first yield at 11 points
第三句：The system matrix has 21 negative eigenvalues.
第四句：The strain increment has exceeded fifty times the strain to cause first yield at 18 points
第五句：Excessive distortion at a total of 21 integration points in solid (continuum) elements
请问各位高手，这主要是什么意思？是不是我的网格分的不好？ 第一句：The aspect ratio for 1500 elements exceeds 100 to 1. The elements have been identified in element set WarnElemAspectRatio.
---------你的网格质量太不好了，各边比例接近于1是最好的
第三句：The system matrix has 21 negative eigenvalues.
---------负特征值，不用管，一般大变形、接触分析都有的
第四句：The strain increment has exceeded fifty times the strain to cause first yield at 18 points
----应变太大
第五句：Excessive distortion at a total of 21 integration points in solid (continuum) elements
------单元扭曲
首先你把网格重新划一次再试试吧。 谢谢，我试试：－）。 仔细算一次看看你的单位是不是封闭的，建议全部实用国际单位制 好的，我试试，重分了网格，好多了。谢谢：－）。
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