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Negative contact energy

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manaliac

Mechanical
Jun 9, 2011
17
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FR
Hello everyone,

I am modelling the application of a pressure on a box laying on three wedges. I used contact surface-to-surface between the three wedges and the bottom shell of the box, with some friction(0.2).

unfortunaltely, when I am looking at the energies outputs, the energy due to penalty contact is negative. I tried to eliminate initial penetrations and to add a contact option (overclosure=hard), but it didnt change a thing.

Do you have any ideas how to supress this negative energy? I am really disturbed by this phenomenon, and i can't trust my results until it's solved.

Thank you.

M.
 
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