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- 1970-1-1
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我在做板料冲压的模拟,有一些inp文件job提交了,计算了8~9个小时后,运行Aborted,检查状态文件.sta
在许许多多的增量步的最后,出现了如下的几个errors,请高手分析一下,这是什么原因?
***ERROR: Excessive incremental rotation of element number 115 of instance BLANK_1.
***WARNING: In element 115 of instance BLANK_1 the ratio of deformation speed to wave speed is 0.34462 at increment 104552. See the message file for further information.
***ERROR: There is only one element with excessive rotations
The following checklist may be helpful in diagnosing the error:
1. Check contact definitions for problems such as excessive initial
overclosure or unrealistic tied definition between contact pairs.
A vector plot of velocities or accelerations will usually help to
identify contact problems.
2. Check stiffness (elastic modulus) and mass (density) definitions for
consistent units and verify that the combination is reasonable.
3. Check for poor mesh definition.
4. Check the boundary conditions for an excessive loading rate. The
*DIAGNOSTICS, DEFORMATION SPEED CHECK=DETAIL option may be used to obtain
detailed diagnostics information.
5. Check the current status of the structure to see if it has
totally failed.
6. A dashpot or a very stiff spring may cause the analysis to go unstable.
The *DYNAMIC, DIRECT option may be used to control the time increment directly.
***ERROR: The fatal error will generate a new field output in the last
increment. All variables applicable to the current procedure and
material type(S) will be written to the output database.
THE ANALYSIS HAS NOT BEEN COMPLETED |
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