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## Homework Statement

problem attached

## Homework Equations

attached

but lame equations i think they are?

## The Attempt at a Solution

attached

Hey

this is an assignment question that i have wasted countless hours on trying to solve without success. The problem is WBVMMECH025 from the anasys 12 verification manual (problem is attached) i have completed the anysys analysis with correct results and now have to do hand calculations, im sure that the interface pressure is correct, im sure i am using the right formula to find tangential stresses due to interface pressure and that those answers are correct. I think it is after this where i try to find the tangetial stresses due to the applied internal pressure is where i am going wrong but cant figure out why. have attached a clean copy of my attempt and the excel formulas should be correct cause they match my hand calculations.

all help greatly appreciated

edit: files were too big for attachment so i hosted them externally

The problem

http://www.fileden.com/files/2010/5/6/2850545/problem.doc" [Broken]

My attempt at the question:

http://www.fileden.com/files/2010/5/6/2850545/my%20attempt.xls" [Broken]

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