Does anyone have an example somewhere, of analyzing an inelastic collision of a mass onto a steel plate, supported on it's edges?  I've a situation where I've a load dropping from about six inches onto a steel pan.  The load is basically a bag of "stuff", and isn't going to bounce.  I need to figure out a minimum pan thickness, and the stresses in edge bends I there are flanges on the sides for stiffness.

This would be some kind of nonlinear analysis, but I've been unable to find any examples.   I'm not sure my employer will pony up the \$1000 or so for a class, but I'd at least like to try and figure this out, to point out the advantage of learning how to do similar analyses.