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Nonlinear static -- theoretical formulation

Thread starter vanji
Start date Oct 26, 2009

Status: Not open for further replies.

Oct 26, 2009

vanji

Mechanical

Hello

I would like to know what is the nonlinear formulation for nastran sol 106?
Logically, in statics you should have
Kij Uj + Kij UjUk + Kijkl UjUkUl=Fi

It seems not to work correctly when using shell elements...
Is the formulation taken correct or is there a parameter to adjust in the bulk?

I thank you for advance

Sincerely yours