Hello,
I kindly asked for some help for modelling
the nozzle junction as a flexible nozzle.
The nozzlepro manual gives the information to put the calculated flexibilities on both elements:

1. On Rigid Element from Vessel centerline to junction (let´s say node 10010 to 10015)
2. On pipe element connected to junction (let´s say
node 10 to 20)

Is this modelling correct ?
-Vessel Axis = Y (Column), Pipe Axis = Z
-Restraints at 10 with Cnode 10015 and all stiffnesses.
-Restraints at 10015 with Cnode 10 and all stiffnesses.
-Torsional Stiffness, which was not generated = RZ = rigid =?
-Inplane Rot. = Flex RX
-Outplane Rot. = Flex RY

Best Regards
Peter

If the connection is at (10015 and 10) you would only need one CNODE, either 10 CNODEd to 10015, or 10015 CNODEd to 10. Think of the CNODE as a "ball and socket" connection, where the stiffnesses define the strength of this connection. Both nodes are the same point in space, just with different names.

Other than this, yes I think your modeling is correct.

Thanks a lot. So, as I understand you, it´s sufficient to put the stiffnesses just one time on node 30 with CNode to 10015, actually there is no need to put them on the vessel element on 10015 as well ?

Regards, Peter

Correct.

Take a look at the CNODE examples for Vessel connections in the Applications Guide. The only difference between these models and your case is that you have stiffnesses from NozzlePro, whereas these examples use the built in WRC-297 engine.

Ok, thank yo for this fast and competent answer.
Regards, Peter