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EXPERIMENTAL STUDY OF LOOSENING OF THREADED FASTENERS DUE TO DYNAMIC SHEAR LOADS

โœ Scribed by N.G. PAI; D.P. HESS

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
326 KB
Volume
253
Category
Article
ISSN
0022-460X

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โœฆ Synopsis

This paper presents a study on loosening of threaded fasteners subjected to dynamic shear loads. A fundamental analysis of loosening reveals that a fastener can loosen at lower loads than previously expected due to localized slip at the contact surfaces. Four di!erent loosening processes of a screw under di!erent conditions of slip at the head and thread contact regions are identi"ed. Experimental results illustrating these loosening processes are presented. In addition, the minimum dynamic shear force required to initiate loosening is determined experimentally.

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โœ N.G. Pai; D.P. Hess ๐Ÿ“‚ Article ๐Ÿ“… 2002 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 659 KB

The two most widespread causes of failure of threaded fasteners subjected to dynamic loads are fatigue and vibration induced loosening. This paper presents results of a study on failure of threaded fasteners by vibration induced loosening caused due to dynamic shear loads. Previous experimental work