将单元转换为显示求解器类型时出错

hfutzsm

将单元转换为显示求解器类型时出错

由于网格是导入到CAE里的，想用Explicit求解时，发现以下错误

***ERROR: Each of the distributing couplings with reference nodes listed below
          has less than 3 cloud nodes that are not reference nodes of other
          distributing couplings. A distributing coupling must have at least 3
          cloud nodes that are not reference nodes of other distributing
          couplings. Increasing the radius of influence or specifying uniform
          weighting method may help in forming the coupling by including more
          coupling cloud nodes. A node set named "ErrNodeDCoupRefNoCloud"
          containing these reference nodes is created to help the user locate
          the nodes and modify the input definition.


是不是我没有更改那些连接单元的属性造成的，而且我也更改不了啊。

其中的shell和solid，我都是 在set里选中然后统一更改的显示属性，

请问这个cloud nodes是什么意思？我知道分布耦合，并且在模型中我并没有在ABAQUS里面定义的，数量很多，更改也麻烦， 不过我想     那样Rbe2，3真的有问题了吗？？？