三维实体混凝土和桁架预应力筋的预应力混凝土梁梁端怎么模拟?
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我用MPC Beam连接桁架单元的节点和实体单元上的节点会报错:2 nodes are missing degree of freedoms. The MPC/Equation/kinematic coupling constraints can not be formed. The nodes have been identified in node set ErrNodeMissingDofConstrDef.请问这是什么问题?应该怎么处理