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T. F. Lehnhoff and B. A. Bunyard, “Bolt Thread and Head Fillet Stress Concentration Factors,” Journal of Pressure Vessel Technology, Vol. 122, No. 2, 2000, pp. 180-185. doi:10.1115/1.556168

has been cited by the following article:

• TITLE: Experimental Strain Investigation of Bolt Torque Effect in Mechanically Fastened Joints

  AUTHORS: Nashwan Younis

  KEYWORDS: Maximum Strains; Fastened Joint; Bolts Torque; Reflected Photoelasticity

  JOURNAL NAME: Engineering, Vol.4 No.7, July 3, 2012

  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.