# Clevis and lug design - Peterson's

Rating:
14

### Description

Calculation of stress concentration effects at a pin and clevis joint. This calculation requires the XLC addin and the XlXtrFun to be installed.

Calculation Reference
Peterson's Stress Concentration

### Calculation Preview

29 Mar 2011
29 Mar 2011
File Size:
101.00 Kb
1446
File Version:
1.2
Rating:
14

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The chart was incorrectly annotated which caused some confusion. This has been corrected in v1.2.
gandalf69 13 years ago
Governing ratio R1 is defined as c/H but is then used as d/H in the lookup table.
I think you have hit on something here Henk. I'll have to go back and check things over to make sure it works when c does not equal H/2. I post up a new version when I have had time to correct it. It is worth noting that the shear stress is simply a reference stress in the calculation and does not effect the stress concentration factor which is the focus of the calculation. However thank you for your fresh pair of eyes. Your feedback is very useful and much appreciated.
I just downloaded this spreadsheet. I don't fully agree with the area used in the "Shear Stress in eye due to tear out" calculation. According to me the formula should look like the attached image.
I think the current formula only work if c = H/2.
Or am I wrong?
Best regards
Henk
There are a few I think the simplest to use is Pin and Lug.xls this is a traditional UK railway engineers method. The method is extended for fatigue design in Pin and Lug - Static and Fatigue.xls
.
There a good aerospace industry method to be found in Aerospace_lug_analysis.xls.
An offshore industry method is presented in API PADEYE Design.
I hope this helps.
Hi John,
I have to design a clevis and lug that carry both axial and transverse load. Can you guide me to where to find design example? Your clevis and lug design only carries axial load.
Thanks