Re: STRESS ANALYSIS [bcc][faked-from][bayes]

>Can anybody tell be write from begining what is stress analysis ?,why is
>done? which paprameters are to be seen?,How stress is devlop in a hot
>line ?, how is relived with bellows etc., what pracaution should be
>taken during routing?

I doubt this will be any help. Ordinarily you'd learn about stress analysis in school or from people you work with. I gather you have no access to either. Your question isn't stupid or goofy, but the answer you asked for is just too long and involved for the list. The underlying principles need to be learned (despite what you may have heard about how computers do it all) including basic physics and mechanics.

The short answers are as follows. --
Stress analysis is the determination the service loading on a mechanical system and determining whether the system can withstand that loading and function as the designer intends.

The parameters are characteristics of the service environment, user requirements and the mechanical properties of the system.

Thermal stress develops when an object is restrained against thermal expansion which would otherwise naturally occur. Bellows add compliance to the system which allows portions of the system to expand without hindrance. The expansion revieves the thermal loads.

The precautions to be taken during routing are outlined in the Piping design codes.

The foregoing isn't as detailed as you probably would like, but I'm using up time that i should be devoting to clients. Besides there wouldn't be enough time in a week to answer what you've asked. You obviously have access to the Internet. You can learn some basics by doing what everyone else has to do: study all the resources you can find and don't ask other people to spoon feed you.

Christopher Wright P.E.    |"They couldn't hit an elephant at
chrisw@skypoint.com        | this distance"   (last words of Gen.
___________________________| John Sedgwick, Spotsylvania 1864)