Modeling cold displacement from hot piping

[danyduclos]

I am doing something wrong but i haven't found out what yet;

I am modeling a new 8'' 700F steam line, it will be installed when the main is hot. So i'm just taking the connection point as an anchor. This part is ok, the main will already be expanded so it's just the new line that will expand and it won't do much on the main.

Afterward though, i want to do an analysis with the piping returning to cold state, both the main and the new line. Since i don't want to model the main and i know the displacement of it when returning, i think i can just take my model of the new line and put a displacement to get it's cold stress. I put the value of displacement in the tab but the analysis gives nothing so.... i think i would have to put two displacement in, the first zero and the second with the displacement so that caesar get the point....
I am right on this and could someone enlighten me as to how to do it properly?
Regards
Dany

 

[doberdorks]

Did you change your load cases to include the displacement?

Coade has this discussed in one of their newsletters at

http://www.coade.com

Also a discussion board there.

SLH