ah, i have the part D but it's incomplete, that's why, np i'll get it asap!
if you find the time, please answer me about the point B) too
thank you very much
HI TGS4
thx a lot for the answers
about the comments:
A) I did that too, but with the Design Pressure i get accettable values, with the test pressure i have not. I can't find load combinations with the test pressure for an elastic analysis. Does that mean i have to switch to an...
Evening All,
here: http://karducci.altervista.org/Ansys_Pipe_Stress_Solid.pdf you can find my stress analysis of the solid model regarding the failure check against internal presure (only) according to ASME VIII div2 2013
My biggest doubt is about the stress categorization, i'm not sure to...
thank you very mutch TGS4
on a solid model, from stress linearization along the main pipe and the nozzle tichness i'v got almost same stress values obtained from the shell model
the shell model is perfect to approach the problem, but for more accurate and detailed results the solid model is...
OK, thanks.
let's try again:
1) the primary local membrane equivalent stress @ the nozzle intersection is higher than the allowable (PL > 1.5S = Sy)
2) the total local equivalent stress (membrane + bending + peak) @ nozzle intersection is lower than the allowable (PL + Pb + F < 3S = 2Sy)
i...
1) the primary local membrane equivalent stress @ the nozzle intersection is higher than the allowable( > 1.5S = Sy)
2) the total local equivalent stress (membrane + bending + peak) @ nozzle intersection is lower than the allowable (< 3S = 2Sy)
which of the two above governs the design?
@TGS4
- ASME Section VIII, Division 2, Part 5
- Internal Pressure only (self balanced)
- Not even constrained (only simmetry condition)
- No fatigue check required
imagine you build such a FE model, and imagine you get the results above described:
- would you consider it safe?
let's try to make it easier to answer:
1) the primary local membrane equivalent stress @ the nozzle intersection is higher than the allowable( > 1.5S = Sy)
2) the total local equivalent stress (membrane + bending + peak) @ nozzle intersection is lower than the allowable (< 3S = 2Sy)
which of...
Hi all
please check the following link: http://karducci.altervista.org/PipeStress.pdf
as you can see it's a pipe system modeled with shell181 elements subject to internal pressure (only)
i need help about the membrane stress i get at the nozzle intersection
- it should be considered local...
