加载中…ANSYS中容易犯错的地方
(2013-05-15 16:53:43)1、ESLN,S,1与ESLN,S的区别
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0
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Select element if any of its nodes are in the selected nodal set (default). |
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1
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Select element only if all of its nodes are in the selected nodal set. |
2、
上面的区别主要是数字1之前的逗号，一种采用英文输入，一种采用汉字输入，目前ANSYS只识别英文输入符号。
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0
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— |
Select element if any of its nodes are in the selected nodal set (default). |
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1
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— |
Select element only if all of its nodes are in the selected nodal set. |
3、平面问题中，上下两层土单元在交接处节点合并后，建立在原节点之上的接触单元节点自动合并。
4、为不同线段指定划分网格密度时，注意：
LESIZE, NL1, SIZE, ANGSIZ, NDIV, SPACE, KFORC, LAYER1, LAYER2, KYNDIV
Specifies the divisions and spacing ratio on unmeshed lines.
- KFORC
KFORC 0-3 are used only with NL1 = ALL. Specifies which selected lines are to be modified.
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0
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Modify only selected lines having undefined (zero) divisions. |
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1
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Modify all selected lines. |
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2
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Modify only selected lines having fewer divisions (including zero) than specified with this command. |
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3
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Modify only selected lines having more divisions than specified with this command. |
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4
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Modify only nonzero settings for SIZE, ANGSIZ, NDIV, SPACE, LAYER1, and LAYER2. If KFORC = 4, blank or 0 settings remain unchanged. |
5、利用坐标选择节点时，注意容差大小会影响选择范围
使用默认容差时，NSEL,S,LOC,Y,-9050
执行SELTOL,1.0E-8，则会精确选择。
6、由CAD图形导入ANSYS后在进行网格划分时，一定要注意导入线段、面积后要正确合并；
7、在某一线段上布置接触单元之前一定要选择所有对象，否则，生成的TARGET单元在CONTACT CHECK 中显示为“UNKNOWN".
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