I'm wondering if anybody has any insight about a question I have concerning the use of fully integrated elements where incompressible hyperelastic behavior is concerned.
ABAQUS uses reduced integration in these cases because of the high dialational wave speed associated with high bulk moduli. The problem is that reduced integration ususally requires hourglass control, which acts as an energy loss mechanism.
All of this would be just fine, except that energy loss at high deformation for a large range of strain rates is exactly what I am trying to model. I am concerned that the numerical energy loss may mask or corrupt the very properties I am trying to discern.
Does anybody have any experience or expertise with this sort of problem?
ABAQUS uses reduced integration in these cases because of the high dialational wave speed associated with high bulk moduli. The problem is that reduced integration ususally requires hourglass control, which acts as an energy loss mechanism.
All of this would be just fine, except that energy loss at high deformation for a large range of strain rates is exactly what I am trying to model. I am concerned that the numerical energy loss may mask or corrupt the very properties I am trying to discern.
Does anybody have any experience or expertise with this sort of problem?