dear specialist:

I attached two example. LRV01 is a complicated model that include the routing in LRV02 I am studying.

In LRV01, ALL piping support is connected on vessel,; BUt in LRV02 , there is no connected vessel ;
My Question is: Why the load at node 10 and 130 is different from two model? even the vertical force direction is opposite.

For instance: in LRV01, at node 10 , the FY is negative that result from weight in SUS,
But in LRV02, at node 10 , the FY is is plus that result from weight in SUS, it is confusing.

somebody can point out the reason?

thanks !

Maybe because you have different load cases.

Regards,

Apart of this, by deleting the equipments, you did not replace them with appropiate displacements so it is normal to have these differences. In any case your model is full of errors, I don't know if the file was not corrupted or not.

Regards,

Thin vessel (8 mm). WRC297 nozzle flex was used. Loads will shift/distribute to stiffer elements

Your nozzle circ stiffness is low (4588 Nm/deg (40609 in-lb/deg), Long is essentially rigid (unlikely) and probably WRC 297 is inaccurate.