NickDePinho
Mechanical
- Apr 21, 2025
- 2
Does anyone have any insight on how to properly model a flange connection on a boiler?
I was given nozzle loads and moments for a boiler that I am connecting to.
I am running a stress analysis of my HW pipe. I typically model anchors as non rigid. allowing for roughly 1/16" of total movement at the connection. This is a rule of thumb that I have learned from an engineer who has taught me.
I have lowered my translational stiffness some in the X,Y, and Z.
But I am unsure of how to treat rotational stiffness of a 10" 150# Flange. Any thoughts on this wold really help.
I found something saying to use 1e5 in*lb/deg another saying allow for .3 deg of rotation.
Curious if there are any codes or insight on how to figure out what is a safe but realistic way to model this flange
I was given nozzle loads and moments for a boiler that I am connecting to.
I am running a stress analysis of my HW pipe. I typically model anchors as non rigid. allowing for roughly 1/16" of total movement at the connection. This is a rule of thumb that I have learned from an engineer who has taught me.
I have lowered my translational stiffness some in the X,Y, and Z.
But I am unsure of how to treat rotational stiffness of a 10" 150# Flange. Any thoughts on this wold really help.
I found something saying to use 1e5 in*lb/deg another saying allow for .3 deg of rotation.
Curious if there are any codes or insight on how to figure out what is a safe but realistic way to model this flange
