Hi I have reposted this on the homework help forums; I have adjusted the post to fit the template requirements.
Slip Plane: is the plane that has the densest atomic packing—that is, has the greatest planar density.
Slip Direction: corresponds to the direction in this plane that is most closely packed with atoms—that is, has the highest linear density.
TEXTBOOK: Materials Science and Engineering...
via wikiapedia: http://en.wikipedia.org/wiki/Deflection_(engineering), http://en.wikipedia.org/wiki/Deformation_(mechanics),
I believe you can have a displacement at the line of action even in a thick wall. Unless there is some sort of rigid constraint that prevents that.
deflection is the...