An Experimental Study of Bearing and Thread Friction in Fasteners

[+] Author and Article Information
S. A. Nassar, H. El-Khiamy, G. C. Barber, Q. Zou, T. S. Sun

Fastening and Joining Research Institute, Department of Mechanical Engineering, Oakland University, Rochester, MI 48309

J. Tribol 127(2), 263-272 (Apr 07, 2005) (10 pages) doi:10.1115/1.1843167 History: Received March 03, 2004; Revised August 27, 2004; Online April 07, 2005
Copyright © 2005 by ASME
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Bickford, J. H., 1997, An Introduction to the Design and Analysis of Bolted Joints, 3rd ed., Marcel Dekker, New York.
Bickford, J. H., and Nassar, S., 1988, Handbook of Bolts and Bolted Joints, Marcel Dekker, New York.
Juvinall, R. C., and Marshek, K. M., 2000, Fundamentals of Machine Component Design, 3rd ed., Wiley, New York.
Jiang,  Y., Chang,  J., and Lee,  C., 2000, “An Experimental Study of Torque-Tension Relationship for Bolted Joints,” Int. J. Mater. Prod. Technol., 16(4/5), 417–429.
Motosh,  N., 1976, “Development of Design Charts for Bolts Preloaded up to the Plastic Range,” ASME J. Eng. Ind., 98, pp. 849–851.
Nassar,  S., Barber,  G. C., and Zuo,  D., 2005, “Bearing Friction Torque in Bolted Joints,” STLE Tribol. Trans., 48, pp. 1–7.
Nassar, S., Matin, P., and Barber, G. C., 2004, “Thread Friction Torque in Bolted Joints,” Proceedings of ASME Pressure Vessels and Piping Conference, July 25–29, San Diego, CA, pp. 145–154.
Zou,  Q., Sun,  T., Nassar,  S. A., Barber,  G. C., El-Khiamy,  H. M., and Zhu,  D., 2005, “Contact Mechanics Approach to Determine the Effective Bearing Radius in Bolted Joints,” ASME J. Tribol., 127, pp. 1–7.


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Bolted joint model for underhead friction
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Underhead pressure distribution scenarios 6
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Thread friction model of a bolted joint 7
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Scenarios for the thread contact pressure 7
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Test apparatus for measuring torque components
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Schematic for measuring underhead friction torque
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Schematic for measuring underhead friction coefficient
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Schematic for measuring thread friction torque
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Comparison of experimental rb with Ref. 6
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Relative significance of variables and their interactions to thread friction
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Main effect of size, thread classification, and material class on thread friction
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Effect of variable interaction on the thread friction coefficient
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Significance of material class, size, and interaction of size-thread classification



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