I have a strange problem at hand.
I have a square plate with periodic boundary conditions.
I have tested the plate in ABAQUS Standard with coarse and fine mesh and it works just as expected.
However, in ABAQUS Explicit, the finer mesh model throws the error "ratio of deformation speed
to wave speed is 0.32563 at increment 4."
The coarser mesh works just fine in ABAQUS explicit.
I am unable to find the bug?
I want to eventually incorporate an element deletion criterion and hence I have to get this fine-mesh plate working in ABAQUS explicit.
Any inputs will be helpful.