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Finite Element Simulation of the Disassembly Process of Pipe Flange Connections

[+] Author Affiliations
Toshimichi Fukuoka, Tomohiro Takaki

Kobe University of Mercantile Marine, Kobe, Japan

Paper No. PVP2002-1091, pp. 139-145; 7 pages
doi:10.1115/PVP2002-1091
From:
  • ASME 2002 Pressure Vessels and Piping Conference
  • Analysis of Bolted Joints
  • Vancouver, BC, Canada, August 5–9, 2002
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-1944-2
  • Copyright © 2002 by ASME

abstract

Elastic interaction between bolts occurs in pipe flange connections during not only the bolt assembly process but also the disassembly process. In this study, the mechanical behaviors of pipe flange connections during the disassembly process have been systematically examined by using finite element analysis. As a result, it is shown that the increase in the rating class and nominal size of pipe flange increases the maximum value of bolt loads occurred during the bolt removing process. The effects of the bolt removing sequence are also analyzed in order to estimate the redistributions of bolt loads and the variations of contact pressure distributions on the gasket bearing surface. Furthermore, it is simulated how a pipe flange connection behaves when the clamping forces of some bolts are lost due to failure or loosening.

Copyright © 2002 by ASME

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