Peterson's Stress Concentration Factors, 2nd Edition?

[MarkEIT]

I am currently using the first edition to do fatigue analysis on rotating shafts. There are several stress risers that do not have charts in the first edition. I'm wondering if someone who has the second edition can tell me if they are covered in it.

1 - Snap ring grooves, with flat bottoms and no radius in the bottom.

2 - Traverse _threaded_ hole in a circular shaft

3 - Methodology for determining the stress concentration factor of a shoulder with a keyway cut through the shoulder.


Thanks in advance,
Mark

 

[Allen]

MarkEIT,
I don't have that book, but you can check it at this link and also you can browse the book online and check whatever you like:

http://www.amazon.com/exec/obidos/A...28/sr=2-1/ref=pd_ka_b_2_1/002-8314751-9552034

 

[MarkEIT]

Thanks Allen.

I have a confession to make. I went to talk to my boss about potentially buying this book, and he pulled it off the shelf for me... he had it all along. Rather than bumping the thread up to say, 'don't bother' I figured it was dead anyway.

But thanks for the effort!

 

[unclesyd]

Here is website where the calculated SIFs’ hold up very well to others. I haven't checked to see if your geometry is there.

http://www.stacieglass.com/scf/index.html

 

[MarkEIT]

unclesyd,

I found that one in my search. It doesn't have the geometry I need. I also found it to work in a very different manner than I understand (it uses Kn, Kg, K..., while I use Kt which is then converted to Kf). But I also ran some tests with it, and it gave stresses that seemed far too low. But I may also have made an error using it, as I did it quickly.

 

[unclesyd]

I just compared some values generated by a high end software package several years ago and they were in very good agreement with the values generated on this site.

I checked the lineage of the site and it originated at UCSD's mechanical engineering dept. The site was generated for Dr. Fred Leckie. There is a contact (E-Mail) on the index page of the SCF site . As of yesterday he was still at UCSD and he might give you some insight on his approach.