For demonstrating protection against plastic collapse, local failure and ratcheting I'm using Inventor's Linear Static solution. For Limit Load method, Nonlinear Static. And for buckling, Linear Buckling.
Because according to ASME B31.1/B31.3, branches of pipelines that have D/t...
Sorry, I'm already checking ΔSn,k ≤ SPS according to 5.5.6.1. I'm just in doubt about what is the "combination of cycles", described at (c). I'm running linear elastic subcases with different temperatures (from 170 to 400ºC) and comparing Von Mises Stress to SPS limits considering the average of...
TGS4, I'm glad about your answer. Fixing extremity #1 and keeping #4 guided seems like the most "natural" way to consider taking in account structure behavior. About displacements and loads associated with connectors, could you help me with which DOF's I should consider in the dependent edge...
Guys,
I'm evaluating a 60" steam pipe according to ASME Section VIII Div. 2 using Inventor Nastran. There are some branches from 8" to 56" as you can see below; these branches continue as secondary pipes. This pipeline will operate between 170~400ºC (445~675K). I also separated FEA models in...
I understood your appointment about material changing, but it isn't a comfortable solution for our client. Sometimes this kind of pipe is made of A36 welded on site.
About pipe flattening, what I meant to say is the possibility of occurring pipe buckling/ovalization due to excessive loads on...
I searched in AWWA C2xx series and didn't find any procedure to calculate thickness, but I'll try AWWA M11. B31.1 will give us a more conservative result, I'll try it too.
Talking about need of FEA, my concern is related not only on the possibility of pipe flattening, but stress rise and...
Hello guys,
We are design a 76" pipeline for a cooling water system. It will be made of A36 plates which we need to determine the thickness. So, based on equation 3a given by B31.3 and process data, we reach a thickness of 5/8". But I'm in doubt about two things:
1) Is there a limit about...
