## how ASME VIII-2 consider effect of mean stress on fatigue analysis

## how ASME VIII-2 consider effect of mean stress on fatigue analysis

(OP)

Hi everyone,

when i am searching how ASME VIII-2 consider effect of mean stress on fatigue analysis

i find that TSG4 states that:

"

i know TSG4 is expert. i just wonder in which paragraph of ASME VIII-2 the effect of mean stress is addressed? is there any expert who could elaborate on this question?

thanks so much.

when i am searching how ASME VIII-2 consider effect of mean stress on fatigue analysis

i find that TSG4 states that:

"

**A mean stress equal to a typical allowable stress is "built in" to the S-n curves.**"i know TSG4 is expert. i just wonder in which paragraph of ASME VIII-2 the effect of mean stress is addressed? is there any expert who could elaborate on this question?

thanks so much.

## RE: how ASME VIII-2 consider effect of mean stress on fatigue analysis

You may find answers for your questions here:

https://www.pveng.com/origins-of-the-asme-fatigue-...

and here

https://pdfslide.net/documents/hinnant-asme-plant-...

## RE: how ASME VIII-2 consider effect of mean stress on fatigue analysis

## RE: how ASME VIII-2 consider effect of mean stress on fatigue analysis

I will also note that the Structural Stress Method for the Fatigue of Weldments has an explicit mean stress correction.

## RE: how ASME VIII-2 consider effect of mean stress on fatigue analysis

Thanks, TSG4, i have learned so much from your posts before.

## RE: how ASME VIII-2 consider effect of mean stress on fatigue analysis

Thanks so much.

## RE: how ASME VIII-2 consider effect of mean stress on fatigue analysis

2 on stress

20 on cycles

I think that Chris Hinnant study, although it is very old, is a very good for understanding the basis for the ASME VIII-2 curves.

## RE: how ASME VIII-2 consider effect of mean stress on fatigue analysis

## RE: how ASME VIII-2 consider effect of mean stress on fatigue analysis