nThe singularity at the corner node is a mathematical artifact of the finite element method, which delivers an infinite stress at the corner.nAway from the corner, there are , in reality, internal forces that are equal and opposite from the top half to the bottom half that stretch the material out to the fixed dimension at the base. The Vector Principal plot will show the arrows horizontal at the right end, but changing angle to point toward the top and bottom corners at the left end.n