Hi,

I want to provide a flexible coupling in a vertical rise of the pipe. This is one of the slurry lines, however the pressure is quite low. This coupling will have a size of around 350 mm and having allowable deflection of 15 mm with the axial stiffness of 3000N/cm.

The arrangement is as follows :
node 10 is connected to nozzle at the bottom of vertical tank, and will move vertical downward 16 mm during operation.
10 -20 is 3 m vertical length.
20-30 coupling
30-40 another 2 m vertical
40-50 bend in north direction and rigid hanger in the vicinity and go on.

My intention is that node 20 shall be displaced in vertical downward direction however not more than 15 mm. How to model this coupling between 20 and 30.

I will appreciate prompt reply.

Kind Regards
Chandanjit