Thank you all for your nice explanation(Posts) about Static fatigue analysis.

What I understood from the posts and Design chapter of 31.3 is that the Static fatigue analysis can be done in two methods(correct me if i am wrong) and they are as follows,

1) Find out Stress range reduction factor(31.3) and do static analysis with Reduced Expansion stress range using normal EXP case.

2) The method given in Technical refference manual.


My question is

a) What is the difference between these two methods and their output?


one difference which i found is that if I use method number 2, i can analyse more than one case(cases with different number of operating/displacement cycles).

Please Guide.

thanks in advance.