Stress concentration factor in splines 1

[parkerdude]

I would like to know what's "out there" for stress concentration factors in splines. The closest thing I could find was in St. Peterson's book that deals with SCF's in gear teeth.

 

[CoryPad]

In PETERSON'S STRESS CONCENTRATION FACTORS, Second Edition by Pilkey, a value of 2.8 is given in section 5.3 (splined shafts in torsion).

Three definitive sources for calculation methods of splines:

(1) DIN 5466-1 Splined joints, calculation of load capacity - Part 1: General basis

(2) DIN 5466-2 Splined joints - Calculation of load capacity - Part 2: Splined joints according to DIN 5480

These are German language only, and available from DIN at:

http://www.din/de

(3) Design Guide for Involute Splines from SAE International:

http://www.sae.org/technical/books/M-117

Regards,

Cory

Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.

 

[parkerdude]

Thanks... I finally found the same information in Peterson's book (1974) in Chapter 5 section B page 248 - 249. I went through the calculations (from Peterson) and analyzed the spline as an involute gear. For the particular geometry I analyzed, I got a SCF = 2.39 as compared to the published SCF = 2.8 for a spline in Peterson's book. So I guess I was at least in the same ballpark. That's good to know; and thanks again.