Dear Colleagues I need to define some symmetry condition for my model in Abaqus and I have to use at least two Coordinate systems.
But Each Time I run the analysis it gives me an error which tells I am not allowed to use more than one Coordinate system in one model.
Would please help me to solve this issue.
I don't understand what you mean by two coordinate systems. We always define a reference coordinate system and simulate the model with respect to it.
If you need to simulate with axisymmetric conditions then you can use elements such as CAX4, CAX8, CAX4R etc.,. where we define a symmetric axis and model accordingly.
In the picture you can find the problem.
The picture in the left is the complete geometry and all edges are hinged.
The picture I defined is the one I shpould use in my model and define the symmetries on it.
This looks like a planar problem where the degrees of freedom are translational only. So the symmetry condition is to constrain the displacements normal to each of the cut faces. The horizontal cut is parallel to the global X axis and so you need to constrain Uy there. On the 45 degree cut you will need to define a local coordinate system and constrain appropriately. However, a problem will occur at the centre of the model where the node belongs to both cut faces. Clearly you cannot define two coordinate systems to a node. I would consider this central node seperately and constrain it fully in the global coordinate system.
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