ssxy 发表于 2015-6-16 12:45:22

HM中导入网格，在ABAQUS中报错

问题描述：在HM建立三维的壳单元，本想在abaqus中通过轴对称来模拟。但是网格导入ABAQUS，选择模型为轴对称，在单元检测时候全部报错，也单元检查了法向一致。在底部施加一个固定约束，表面加一个很小力（只是试算下），但是在JOB中提示错误：”An invalid poissons ratio value has been specified. The poissons ratio must be less than the value of .5
The area of 22006 elements is zero, small, or negative. Check coordinates or node numbering, or modify the mesh seed. The elements have been identified in element set ErrElemAreaSmallNegZero.

23101 nodes have negative radial coordinate values. Negative values are illegal for axisymetric elements. The nodes have been identified in node set ErrNodeRadCurCoord.

An invalid poissons ratio value of 3.0000 has been specified. The poissons ratio must be less than the value of .5

Analysis Input File Processor exited with an error.”

Charles 发表于 2015-12-9 10:31:57

单元质量不行把，查下雅克比

licheng712 发表于 2015-12-9 10:37:52

单元编号乱了

田兲 发表于 2016-3-25 20:30:22

renumber一下

mogu198825 发表于 2016-3-28 11:25:32

这个是单元类型的问题，换成Abaqus默认的大暖类型， 如 S4->CAX4

fireflywph 发表于 2016-3-28 17:53:15

An invalid poissons ratio value has been specified. The poissons ratio must be less than the value of .5
这不是说泊松比给错了吗

wrj001 发表于 2021-7-4 10:57:14

由弹性力学可知，泊松比应在0.5以下。楼主的3.0错了
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