How to Model the Metal Hose in START-PROF

Read about START-PROF pipe stress analysis software

Metal hose is bellows inside the braid. The braid resist to the pressure thrust forces. The whole metal hose element don't pass the pressure thrust forces on the connected pipes. The metal hose stiffness is so low that it could be ignored in analysis.

There's a 2 options how to model the metal hose:

First Option

Example project file: Metal hose1.ctp

Add the custom expansion joint with a very big flexibilities

Second Option

Example project file: Metal hose1.ctp

Cut the piping and analyse two independent models with a caps at the free ends.

For both options need to apply the half weight of the metal hose into the both ends (for example 6 and 10). After analysis need to check the hose end displacements and compare to allowable values from manufacturer.