ABSTRACT
T~v)(S,X3)=Tap(S,X3)PP(S) onE (13.6) where E indicates the edge surface area. This equation with the third of Eqs. (13.5) indicate that although the surface traction on the edge must be directed perpendicular to the X3 axis (i.e., its X3 component must vanish), it may vary with the X3 coordinate.
