Finite Element Simulation of Tightening Process of Bolted Joint With a Tensioner

[+] Author and Article Information
T. Fukuoka

Department of Marine Engineering, Kobe University of Mercantile Marine, Kobe, Japan

J. Pressure Vessel Technol 114(4), 433-438 (Nov 01, 1992) (6 pages) doi:10.1115/1.2929251 History: Received February 13, 1992; Revised August 31, 1992; Online June 17, 2008


In tightening structural members with bolts or studs, hydraulic bolt tensioners are frequently used in the case where the clamping force must be controlled with high accuracy. The most important factor in the operation is the ratio of desired clamping force to initial tension applied by a hydraulic tensioner, which is termed “effective tensile coefficient” here. In this paper, a numerical approach of the tightening process is proposed using the finite element method, which can deal with axisymmetric elastic contact problems. The amounts of the coefficient are estimated for various design factors such as grip length, nominal diameter of screw thread, and coefficients of friction on contact surfaces.

Copyright © 1992 by The American Society of Mechanical Engineers
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