Torsional Wind-Up in Studs
Torsional Wind-Up in Studs
(OP)
This somewhat pertains to my Helicoil thread. Am I correct in my thinking that when a long stud is tightened to obtain proper clampload of the joint, there will be some residual torsion stress in the stud? This would be for a long stud, such as a 10mm stud, 250mm long. Rolled threads at both end, so that the shank of the stud is smaller diameter than the threads.





RE: Torsional Wind-Up in Studs
"The torsional stress always becomes smaller in the working state than in the assembly state. In joints preloaded beyond the elastic limit, a complete reduction of the torsional stress has often been observed. In elastically preloaded joints, the torsional stresses in many cases decreased to 50 % under static loading and are also completely reduced in the long term under alternating loading."
Regards,
Cory
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RE: Torsional Wind-Up in Studs
Regards,
Mike