Snubber Modelling Query
In cases where the snubber support is attached to the external structural support, we provide the Cnode with the displacements and the snubber restraint locations.
However, when the snubber is supported off another vessel example Column-Reboiler, it gets complicated.
Looking at one of the system which has been modelled with a Rigid element from the column centreline to the outside edge of the column where one end of snubber is
Attached. The other end is attached to the re-boiler, with the intention of transferring the re-boiler seismic loads to the Column.

The issue is the thermal displacement of the re-boiler side is different from the thermal displacement at the column side. In conventional snubber design the displacements at
The snubber location in the restraint output would match the displacements at the operating case where the snubber is not active. But this is not the case with cnoding to the
Actual column connection.

If we change the system and define the reboiler side displacement at the snubber location and ignore the connection to the column that may not be accurate as the thermal
Displacements at the column end (which is higher) is not captured.
Anyone encountered a similar situation ?