Piping - Effective Force (Pressure and Temperature)
Piping - Effective Force (Pressure and Temperature)
(OP)
The majority of my experience is related to subsea pipelines so excuse me if this question is obvious. Now for a pipeline if I want to consider the effective force I generally have two options, the fully restrained force (made up of end cap, thermal and poisson effect forces) or if I am looking at the unrestrained section then the maximum force possible is the weight of the pipeline x effective axial friction coefficient. I am currently looking at a topsides piping unit and need the force/moments at several points in the pipework, obviously I can do a sense check on my model for the forces at anchors/supports and can check displacement plots to see if its behaving as expected but how can I check that the effective force away from supports is realistic? Apologies if missing something obvious here.





RE: Piping - Effective Force (Pressure and Temperature)
I had a hard time interpreting your question, hope that was the answer.
We are more connected to everyone in the world than we've ever been before, except to the person sitting next to us. Lisa Gansky
RE: Piping - Effective Force (Pressure and Temperature)
We are more connected to everyone in the world than we've ever been before, except to the person sitting next to us. Lisa Gansky
RE: Piping - Effective Force (Pressure and Temperature)
RE: Piping - Effective Force (Pressure and Temperature)
Consider
1. the force due to pressure Fp = P*A (where P is the internal pressure and A is the pipe cross sectional area)
2. the force due to friction Ff = M*f (where M is the weight of the pipe and f the friction coefficient)
3. force related to change of direction Fcd = 2*A*rho*v^2*sin(alpha/2)/g (where rho is the fluid density, v is the fluid velocity, alpha is the turning angle of the pipe, g is the acceleration f gravity)
Take a glance to the link below too
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RE: Piping - Effective Force (Pressure and Temperature)
Guides do not restrain in the axial direction (thermal growth), so no axial load component is produced there.
Loads from fluid changing direction are applied as point loads at the point of direction change and reactions calculated considering the pipe as a structure.
We are more connected to everyone in the world than we've ever been before, except to the person sitting next to us. Lisa Gansky