Equivalent stress range of fatigure analysis
Equivalent stress range of fatigure analysis
(OP)
Hi,
That's for Sec VIII Div 2 Part5 and using Solidworks Simulation. How to get equivalent stress range? Under pressure vessel design, obtain peak stresses by linearizing of both high and low load, then get the difference of them. Or, make difference when sum results by pressure vessel design, then linearize the difference to get delta Spk?
Thanks!
David
That's for Sec VIII Div 2 Part5 and using Solidworks Simulation. How to get equivalent stress range? Under pressure vessel design, obtain peak stresses by linearizing of both high and low load, then get the difference of them. Or, make difference when sum results by pressure vessel design, then linearize the difference to get delta Spk?
Thanks!
David





RE: Equivalent stress range of fatigure analysis
RE: Equivalent stress range of fatigure analysis
I don't quite understand "at the component level". I checked ASME code again. On P547 equation 5.29, the delta Spk should be von Mises, and need to get the difference first for every node. Am I right?
Thanks for your help?
David
RE: Equivalent stress range of fatigure analysis
In other words, you don't take the difference of the von Mises stresses, you take the differences of the component stresses, and use those component stress ranges to calculate an equivalent stress range.