Dear all,
What could be the reason I see a negative CPRESS result (despite having a Hard contact definition) in a VCCT analysis. This is seen at the crack tip (if Node to Surface contact formulation) and at nodes just behind or at the crack tip (Surface to Surface contact formulation).
For this node, my COPEN does go to negative - but to a magnitude of e-19 (maybe cause of numerical isses / nose) and am unable to confirm if this small value could mean penetration?
- What does a negative CPRESS indicate?
- Is negative CPRESS possible in a hard contact definition?
