Contact Forces

Hi,

 I am trying to analyze the contact forces during impact using radioss.

Do you have a pictorial representation or any documentation of Normal forces in X, Y, Z, Tangent forces in X,Y,Z and Total Forces in X, Y, Z?

I also want to know whether the component of a total force components would be the addition of Normal force vector component and tangent force vector component?

 I could not find any documentation yet.

Please help me out.

Thanks