.刚性区域的建立关于CERIG命令的用法(转)CERIG命令是用来限制两个节点的自由度,但是不是约束,是使两个节点的某些或全部自由度具有相同的值,即通常说的刚化.CERIG, MASTE, SLAVE, Ldof, Ldof2, Ldof3, Ldof4, Ldof5Defines a rigid region.要选取主节点(MASTE)和副节点(SLAVE),Ldof和后面的是想要刚化的自由度.本来很简单的命令,但是还是有一些使用限制.By setting Ldof to ALL on the CERIG command (default), this operation will generate three equations for each pair of constrained nodes in 2-D space. These equations define the three rigid body motions in global Cartesian space (UX, UY, ROTZ). In order to create a rigid regio
