Modeling fittings acc. to ASME B16.11

[TomoB]

Hello,

I am seeking advice on the best approach to model pipelines that incorporate ASME B16.11 fittings. These fittings appear to be quite stiff, and my concern is that I might model them as too flexible.

My current approach would be to simplify the model by using the minimum wall thickness specified for the body wall (G). However, since the forged parts have non-uniform wall thicknesses, with some areas being significantly thicker, I am worried this simplification could introduce inaccuracies.

What method would you recommend to accurately model these fittings while accounting for their stiffness?

Thank you for your time!

 

[Maslov]

Going off of "G" should give a fine result. Unless you have hundreds of these in a line, the minor thickness differences should be negligible.

Just don't forget to enable SIFs for socket welds as per ASME B31J (if applicable to your code):

 

[TomoB]

Thanks!