Topic: Traction Boundary condition for structural 2D and 3D elements
I am trying to apply traction BC's on an element. The constant edge load and constant surface load functions are not really adequate to apply general traction bc's. Let me be more clear. For example lets say i want to do apply a constant shear on a curved surface, then the only options present are to prescribe the x and y components of this on the element side, however, this would mean calculating the x and y comonents on each element with an assumed normal and then computing the values before hand and applying. Now for large deformation problem, if the normal vector changes, then there is no easy way to give assume that the x and y components will be the same as the material deforms.
My interest is the following. I have a problem where i would like to specify the actual traction and hopefully oofem can handle the change of the normal direction.
Cheers