Combined Stress in Pin - AISC Reference

[hungrydinosaur]

Hi All,

I am trying to find some reference for combined stress calculation in a pin, in AISC 360-10. Can someone guide me to the correct section please?

The pin in question is a circular pin used in a clevis, and we have the result values of Axial and Shear Force on the pin with a beam analysis program. I want to to refer AISC 360-10 to do a hand calculation, but can't find the correct section to refer to. Thanks in advance.

Regards,

HD

 

[dhengr]

Hungrydinosaur:
Everyone wants the exact and perfect formula for their strange engineering condition, so they can just plug and chug along, no thought req’d. And, they also want a code or std. paragraph number which they can cite, for that/their exact problem. Unfortunately, our codes and stds. do not cover every engineering condition in the universe. AISC does address combined stresses in several other contexts though, so you should get a sense of their tack on the problem. For goodness sakes, have you ever taken good engineering courses in Engineering Mechanics and Strength of Materials, don’t you have (didn’t you save?) your textbooks on these subjects? Dig them out and do a little self-study. A good Strength of Materials or Theory of Elasticity text will have considerable discussion on combined stresses, use these and a little engineering imagination and judgement for your hand calcs. The codes do allow the use of good old engineering experience and judgement, and rational analysis in accordance with well-established principles of mechanics, in the practice of engineering. Then, the question is…, how do you get much axial force in a shackle or clevis pin? You might get shear and bending, but if you are getting much bending, you are likely using the wrong clevis for the pin-plate or lifting lug. One solution to the pin bending problem is to find a piece of mech. tubing with a i.d. slightly larger than the pin dia. Cut that to fit within the clevis jaws and slip it over the pin, so you are essentially back to a pin shear problem.