here is a simple question
I have modeled the reduced section of a tensile test specimen in 3D (a simple cylinder; falt surface in x-y plane, length in z direction). I applied a load on one flat surface of the cylinder, and put the opposite flat surface as a symmetry plane.
When I plot the result after the simulation of a tensile test, the cylinder moved in the direction perpendicular to the application of the load. I was expecting it only to increase in length in the z direction.
Is there any other boundary conditions I should have considered?
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