In an effort to establish a theoretical outline of a criterion for preventing the vibration-induced loosening of preloaded threaded fasteners, this paper provides an experimental and analytical insight into the effect of the initial bolt preload and the excitation amplitude on the self-loosening performance of a cap screw fastener. A nonlinear model is used for predicting the clamp load loss caused by the vibration-induced loosening of cap screw fasteners under cyclic transverse loading. Experimental verification was conducted on the twisting torque variation and the effect of the preload level and transverse displacement amplitude. Comparison of the experimental and analytical results on the clamp load loss with the number of cycles verifies that the proposed model accurately predicts self-loosening performance.
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e-mail: yang2345@oakland.edu
e-mail: nassar@oakland.edu
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June 2011
Research Papers
Analytical and Experimental Investigation of Self-Loosening of Preloaded Cap Screw Fasteners
Xianjie Yang,
Xianjie Yang
Department of Mechanical Engineering, Fastening and Joining Research Institute,
e-mail: yang2345@oakland.edu
Oakland University
, Rochester, MI 48309
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Sayed Nassar
Sayed Nassar
Fellow ASME
Department of Mechanical Engineering, Fastening and Joining Research Institute,
e-mail: nassar@oakland.edu
Oakland University
, Rochester, MI 48309
Search for other works by this author on:
Xianjie Yang
Department of Mechanical Engineering, Fastening and Joining Research Institute,
Oakland University
, Rochester, MI 48309e-mail: yang2345@oakland.edu
Sayed Nassar
Fellow ASME
Department of Mechanical Engineering, Fastening and Joining Research Institute,
Oakland University
, Rochester, MI 48309e-mail: nassar@oakland.edu
J. Vib. Acoust. Jun 2011, 133(3): 031007 (8 pages)
Published Online: March 25, 2011
Article history
Received:
October 14, 2009
Revised:
March 8, 2010
Online:
March 25, 2011
Published:
March 25, 2011
Citation
Yang, X., and Nassar, S. (March 25, 2011). "Analytical and Experimental Investigation of Self-Loosening of Preloaded Cap Screw Fasteners." ASME. J. Vib. Acoust. June 2011; 133(3): 031007. https://doi.org/10.1115/1.4003197
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