- 积分
- 5
- 注册时间
- 2004-6-22
- 仿真币
-
- 最后登录
- 1970-1-1
|
发表于 2006-8-14 11:50:20
|
显示全部楼层
来自 北京
我也遇到这个问题,我查了帮助文件,上面说可能是过约束。
In addition to CE-specific error messages, you may also notice "small (or zero) pivot" messages from the solver. Such overconstraints may be caused by one of the following conditions:
Duplicate CEs are specified for the same DOFs.
Work-around: Delete any duplicate specifications, or issue an NUMMRG,CE command to compress them out.
DOFs in a CE are also present in a coupled (CP) set.
Work-around: Delete the CP set and include the DOF in the CE to obtain the desired response.
CEs are chained together in such a way that they form a "circular" set.
Typically, this condition occurs when you define CEINTF and/or MPC contact on adjacent surfaces.
Work-around: Perform the CEINTF operation, or specify the contact region encompassing both surfaces simultaneously rather than individually. |
|