Reply To: LS-Dyna, Negative volume problem.

[Pedram Samadian]

Hi,

To address the issue with termination due to the mass increase, you can either deactivate or reduce the mass scaling (i.e. decrease the time step size). 

The element quality graph also shows that there is a need for mesh refinement. The element metric should not fall below 0.2. Avoid using very fine mesh sizes. Try to generate more uniform mesh size distributions.  

Replace tetrahedral elements with hexahedral elements if possible. The tetrahedral elements are normally more computationally expensive and result in stiff predictions. 

I hope these tips help.

Thanks,

Pedram