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ehsan_kabiri_33
Participant

Join Date: Dec 2010
Posts: 1

Designing Shear Bolted Joints in Fatigue Load?

09/02/2011 9:45 AM

Hi everybody. I googled a lot on the Internet, but no hits when I was trying to find some applicable examples for designing shear bolted joints in fluctuating load. Can anybody give me an applicable sample or some hints in design of that problem? I've already searched these books but nothing except examples in "fatigue design of bolted joints in tension":

  • Introduction to the Design and Behavior of Bolted Joints
  • Steel Designers Manual 6th edition
  • Shigley's Hand Book and Machine Design

I want to know how to find Se and/or Ka,Kb,Kc,Kd,Ke,Kf and stress concentration factor in fatigue loading of shear bolted joints. Thanks in advance
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Codemaster
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Join Date: Jul 2005
Location: Stoke-on-Trent, UK
Posts: 4496
Good Answers: 137
#1

Re: Designing Shear Bolted Joints in Fatigue Load?

09/02/2011 12:40 PM

Assuming it's a structural application, usually the bolts can be tightened (under no-load) to > applied load. Then when the load is applied, the clamping force between the members is reduced by the applied load, but the bolt stress does not change (that's the theory anyway). So there is no fatigue and according to my data the bolt life is infinite.

That's the principle, but without going it I don't know about the various factors you mention.

Codey

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