Pipe elbow stress modelling
Pipe elbow stress modelling
(OP)
I have ultrasonic data for a thick walled elbow that show the pipe wall thinning (due to errosion / corrosion) however the wall thickness is non-symetrical at various cross sections and is more pronounced in the turn of the elbow. From this data I can develop a 3-D model. I need to identify the maximum principal stresses in the elbow. I have access to ansys and abaqus but there is no basic model for this application in the library of either program. Does anyone know where I can obtain a base model for this application in ansys or abaqus or does anyone recommend another program for this application? Do I superimpose the thermal stress results with the hoop stress results? I have been required to use an FEA program to provide a look at the stress profile but should I pull out my Peng and Peng book and just look at the stresses where the wall thickness is a min?Thank you in advance for any help.





RE: Pipe elbow stress modelling
Take a look at API-579/ASME FFS-1. What you are trying to do is considered a "Level 3" analysis.
However, there is such a thing as a "Level 2" analysis which does not require the use of FEA, and is ananalytical approach you can do on a spreadsheet.
I'd start with a Level 2 analysis, and only perform Level 3 if it is necessary.
All the best.
RE: Pipe elbow stress modelling
Technical Note:
Please: have you review API 579 & A.S.M.E FFS-2 (2009) Fitness for Service - Example Problem Manual
http:
Using International Standards to Support the Life-Cycle Management of Pressurized Fixed Equipment
http://ww
steve
RE: Pipe elbow stress modelling
Gene
RE: Pipe elbow stress modelling
thanks
Gene
RE: Pipe elbow stress modelling
RE: Pipe elbow stress modelling
Thank you
Steve
RE: Pipe elbow stress modelling