optistruct模块进行求解时，提示rigid单元没有连接

surfin

在hypermesh下创建了网格，其中含有rigid单元，然后选择optistruct模块进行求解时，提示rigid单元没有连接，可是检查时发现都是已经连接的，把rigid单元删除重新创建还是不行，请高手帮忙一下啊

There were 6 error messages during input processing.
  The first message is repeated below:
  
  *** ERROR #  723 ***
  An invalid rigid element.
  This RBE2 is not connected with any structural element.
      RBE2 element id =     976686
  independent grid id =      21325
  Note: If this rigid element is also connected with other rigid elements,
  then this error means that there is rigid body mode or mechanism remained
  in this rigid element chain due to lack of connected structural elements.
  ***** ERROR ENCOUNTERED BEFORE COMPLETING THE CHECK RUN *****

lbsys_3122

你按照单元ID976686查找单元RBE2，肯定是有问题的。或者两个从节点连到一起了~~~~

songyuyu

我现在也遇到了这个问题，检查了发现是没有定义错误的，请问楼主当时是怎么解决的呢