i have a long vertical line giong to top of a very high vessel.

at bottom line there is a rest (see attached file, node 2622) having operative load -9495N

in node 2715 there is a constant spring used to unload node 2622 (9000N costant).

the problem is the Hydro scase:
the spring is seen as rigid and is like a vertical stop. So the 2622 node is high loaded (-91180N) while in spring node i have the opposite load (+85958N).

I can tell "during hydro don't istall the spring".

but how can i implement it in caesar model?

i can't set "hanger stiffness" to "ignore" bacause i would false all the other spings (in the model there other springs, in attached file i deleted the other connected pipes). and i don't want to make a second model only for hydro test analysis.

how can i solve it?