【讨论】How to add shear boundary condition?

lfzhu

I want to test the shear moduls of composite by using abaqus
  
but how to keep the edge shape of the micromodel falt after deformation?
  
It's better if some one really know how to solve it
  
It's to be note in ABAQUS:
Kinematic constraints are imposed by eliminating degrees of freedom at the coupling nodes. In ABAQUS/Standard once any combination of displacement degrees of freedom at a coupling node is constrained, additional displacement constraints—such as MPCs, boundary conditions, or other kinematic coupling definitions—cannot be applied to any coupling node involved in a kinematic coupling constraint. The same limitation applies for rotational degrees of freedom. This restriction does not apply in ABAQUS/Explicit. See “Kinematic constraints: overview,” Section 20.1.1, for more information
  
Thanks

lfzhu

the followwing is the ficture

ben_shi2

有人解决这个难题了吗?

chibiko

我也在找解决这个问题的方法！

chibiko

simple shear 是最简单的解决办法，但是边界的约束条件不好施加，左右两条边要保持直线，而且没有相对y方向的位移（节点对节点，怎么施加？），也就是相邻的两个单元cell要可以组装起来（UR3要等于0了吧）。上下两个边也要确保可以拼接起来。