Hour Glass Energy

Altair Forum User

Can Hour Glass Enegry go Negative in a crash simulation? If so, what are the reasons behind it?

Altair Forum User

Hi Nataraj,

Is it energy error or hourglass energy?. In a crash simulation generally there are no chances of negative hourglass energy.

If its hourglass energy, please upload a snapshot of the global energy curves (internal energy, kinetic energy, total energy, hourglass energy and contact energy curves in a single plot).

Altair Forum User

Thank you for your quick response.

 

I don't have any snap of Energy Graph.

 

I wanted to know can it go negative by any other parameter in crash simulation.

 

Thank you in Advance.

Altair Forum User

Hi Nataraj,

Normally hourglass energy will not go to negative values.