CHallenger disaster

[uuDevil]

[ QUOTE ]
i am having a lot of trouble seeing it in my model.

[/ QUOTE ]

Sorry if this is obvious, but are the results otherwise reasonable? Check your dimensions and material properties. Do you have the operating pressure right (~500 psi, IIRC)? Make sure you're using consistent units.

Also keep in mind that rotation is significant to the extent that it changes the o-ring "squeeze," which is only ~0.05" on an o-ring with a nominal cross-sectional diameter of 1/4". (See The Parker O-ring Handbook, http://www.parker.com/o-ring/Literature/04-5700.pdf) That's a small change when the case diameter is 12 feet. Conceptually it's easy to see that this effect will happen, but it may not be so easy to see in a model-- sorry about that.

I can't promise much, but if you want me to take a closer look, PM me more details.