Dear FEAP users,
I want to redo some calculations of a Griffith crack for testing issues. The mesh is a simple horizontal crack at the edge of the mesh and the author wrote, that his boundary condition is an imposed pressure on the faces of the crack (one calculation with perpendicular stresses and one calculation with shear stresses). I've tried to rebuild this kind of situation but failed so far. I've found the pressure elements, but they didn't work (no convergence).
An especially difficult task in modeling crcks is, that you can't distinguish the faces of the crack by their coordinates, so the usual options like csurf or ebou aren't - at least to my knowledge - applicable. Are these pressure elements the way to go to impose a pressure (and especially a shear stress) on a face of a crack or is there another way to deal with this kind of boundary condition?
Thanks in advance.