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Vibratory Loosening of Bolts
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Sector:
Event:
Mid-Year Meeting
Language:
English
Abstract
In this paper, the effects of fluctuating torque on loosening of a tightly seated bolt are investigated. Tests over a wide range of bolt stresses and loosening torques are reported and equipment developed for determination of such effects is described. It is shown that a definite functional relationship exists between the stress on a typical bolt, the oscillatory loosening torque that is applied, and the number of cycles before the bolt becomes loose. The effects of these relationships follow a clearly defined law, although they are, of course, influenced by a number of additional variables.
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Topic
Citation
Clark, S. and Cook, J., "Vibratory Loosening of Bolts," SAE Technical Paper 660432, 1966, https://doi.org/10.4271/660432.Also In
References
- Clark, S. K. “Static and Dynamic Testing of Self-Locking Bolts.” Paper 824E presented at SAE National Automobile Meeting March 1964
- Goodier J. N. Sweeney, R. J. “Loosening by Vibration of Threaded Fastenings,” Mechanical Engineering December 1945 798 802