libaochan 发表于 2004-9-2 21:01:13

【讨论】接触问题请教?

我做橡胶和刚体的接触,总是出下面的错误不知道该怎么改
No element connection for node 864 direction 3
             No element connection for node 865 direction 3
             No element connection for node 866 direction 3
             No element connection for node 867 direction 3
             No element connection for node 868 direction 3
             No element connection for node 869 direction 3
             No element connection for node 870 direction 3
             No element connection for node 871 direction 3
             No element connection for node 872 direction 3
             No element connection for node 873 direction 3
             No element connection for node 875 direction 3
             Nodal degrees of freedom without element
             connection have been fixed for ADINA input data.
             There may still be degrees of freedom without
             stiffness - see documentation.

*.in文件附在下面,如果里面还有什么样的问题请多多指教

jinjinhao 发表于 2004-9-2 21:56:34

回复: 【讨论】接触问题请教?

关掉 Z向平移自由度试试

libaochan 发表于 2004-9-3 17:01:27

回复: 【讨论】接触问题请教?

谢谢,上面的问题我用“约束”解决了,
但是我即使设置刚体位移为0也会出现如下问题,那位大侠帮我看看
METHODSTEP-NUMBERSUBINCREMENT    TIME STEP    SOLUTION TIME   INITIAL ENERGY
*ATS*          1          1       0.200000E+00   0.200000E+00   0.100000E-04

ITE=00.10E-040.00E+000.00E+000.13E+000.00E+000.00E+00    0.10E+010.00E+000.00E+000.00E+00
                   (    1682)(       0)(      30)(       0) 0.00E+00            0.00E+000.00E+00
                    0.00E+000.00E+00 -0.93E-020.00E+00

Element distorted, Jacobian DET= -1.84709854E-01GROUP=      1EL=         1

      MESH TOO DISTORTED (JACOBIAN DETERMINANT NOT POSITIVE)

      RESTART FOR AUTOMATIC-TIME-STEPPING AFTER ITERATION    1
Mesh too distorted, Jacobian determinant not positive

riemma 发表于 2004-9-4 08:56:53

回复: 【讨论】接触问题请教?

网格划分的不是很好,重新细分一下,肯能回好些!
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