An Experimental Study of Self-Loosening of Bolted Joints

[+] Author and Article Information
Yanyao Jiang, Ming Zhang

Mechanical Engineering, University of Nevada, Reno, NV 89557e-mail: yjiang@unr.edu

Tae-Won Park

Department of Precision Mechanics, Jeonju Technical College, Seoul, Korea

Chu-Hwa Lee

Advanced Engineering Center, Ford Motor Company, Dearborn, MI 48121

J. Mech. Des 126(5), 925-931 (Oct 28, 2004) (7 pages) doi:10.1115/1.1767814 History: Received September 01, 2003; Revised January 01, 2004; Online October 28, 2004
Copyright © 2004 by ASME
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Jiang,  Y., Zhang,  M., and Lee,  C.-H., 2003, “A Study of Early Stage Self-Loosening of Bolted Joints,” ASME J. Mech. Des., 125, pp. 518–526.
Junker, G. H., 1969, “New Criteria for Self-loosening of Fasteners under Vibration,” SAE Paper 690055, pp. 314–335.
Pai,  N. G., and Hess,  D. P., 2002, “Three-Dimensional Finite Element Analysis of Threaded Fastener Loosening due to Dynamic Shear Load,” Engineering Failure Analysis, 9, pp. 383–402.
Finkelston,  R. F., 1972, “How Much Shake Can Bolted Joints Take,” Mach. Des., pp. 122–125.
Daddbin,  A., and Chow,  Y. M., 1992, “Theoretical Models to Study Thread Loosening,” Mech. Mach. Theory, 27, pp. 69–74.
Bickford, J. H., 1995, An Introduction to the Design and Behavior of Bolted Joints, 3rd ed., Marcel Dekker Inc., New York.
Eccles, W., 1993, “Design Guidelines for Torque Controlled Tightening of Bolted Joints,” SAE Paper No. 930578.
Jiang, Y., Zhang, M., Park, T.-W., and Lee, C.-H., 2002, “An Experimental Investigation on Frictional Properties of Bolted Joints,” ASME PVP-Vol. 433, Analysis of Bolted Joints, PVP2002-1083, pp. 59–66.
Zhang,  M., Jiang,  Y., and Lee,  C.-H., 2003, “An Experimental Investigation of the Effect of Clamped Length and Loading Direction on Self-Loosening of Bolted Joints,” ASME J. Pressure Vessel Technol., in press.
Zhang,  M., Jiang,  Y., and Lee,  C.-H., 2003, “Finite Element Modeling of Self-Loosening of Bolted Joints,” ASME J. Mech. Des., in press.


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Setup for self-loosening experiment
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Typical two-stage self-loosening process
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Definition of Stage I self-loosening
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Self-loosening curve for Combination I (P0=25 kN)
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Self-loosening curve for Combination I (P0=32 kN)
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Self-loosening curve for Combination I (P0=40 kN)
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Self-loosening curve for Combination II (P0=40 kN)
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Self-loosening curve for Combination III (P0=40 kN)
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Influence of initial clamping force on self-loosening (Combination I)
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Dependence of self-loosening on preload (Combination I)
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Comparison of self-loosening curves for different Combinations (P0=40 kN)
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Load versus displacement hysteresis loops for Combinations I and III at endurance limit
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Experimentally obtained Q-δ responses
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Q-δ hysteresis loops obtained from finite element simulation
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FE Simulation result with different friction coefficient between clamped
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Self-loosening process in linear scale (Combination I)
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Variations of dP/dN and dθ/dN with clamping force (Combination I)



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