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I passed on the first try!!! :party-smiley-048: Alabama 6/4/2010, Regular Mail Alaska 6/3/10, Website Arizona 6/2/2010, Email Arkansas 6/3/10, Website Florida, 6/2/10, Email Georgia, 6/7/2010, Website Idaho, 6/4/10, Email (From State Board) Illinois, 6/4/10, Website Indiana, 6/3/10...

Thanks! the preload is the part that had me screwed up. Got it now. thanks!

Has anyone else looked at this problem? I beleive the solution in the book takes the wrong approach. I believe this should be a conservation of energy problem. Not a constant acceleration problem. You can calculate the needed takeoff velocity using the projectile motion equations. That...

I was under the impression that since it is a "Brittle Material" Shear stress limit is hard to calculate. I am not sure why they call the forces consecutive, but if you treat them as all being applied to the block at the same time, you can calculate the Principle stresses. then by...

I am in the office now, and will look at those pages tonight. I have attached a sketch of what i believe is occuring. I still think i'm missing something. After checking the book tonight. we'll see. 20100405115109681.pdf

I might be missing something here but in the solution for #530 they treat the steel plate and the bolt as springs in parallel. Unless I am looking at the problem wrong, the pressure pushes on the plate and then the plate pushes on the bolts. This seems more like a series spring analysis and...