Title

Experimental Strain Investigation of Bolt Torque Effect in Mechanically Fastened Joints

Document Type

Article

Publication Date

7-2012

Publication Source

Engineering

Volume

4

Issue

7

Inclusive pages

359-367

DOI

http://dx.doi.org/10.4236/eng.2012.47047

Publisher

Scientific Research Publishing, Inc.

Place of Publication

United States

ISBN/ISSN

19473931

Abstract

In this study, a different issue of mechanical engineering interests is determined for threaded fastened joints. A series of photoelastic experiments were performed to determine the maximum strains for the holes in a tensile flat plate subjected to bolt-nut loads. Pertinent strain distributions were examined to determine the roll of the torques on the bolts in mini- mizing the strain; hence stress concentration. The experimental determination of maximum strains is needed as a way to validate future theoretical and numerical results, and provide a valuable aid to their application. The emphasis of this paper is on deformation. The results indicate that strains can decrease significantly with the increase of the bolt’s pre-load.

Keywords

Maximum Strains; Fastened Joint; Bolts Torque; Reflected Photoelasticity

Disciplines

Engineering

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