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Fast Computational Residual Stress Analysis for Welded Pipe Joint Based on Iterative Substructure Method

[+] Author Affiliations
Akira Maekawa, Shigeru Takahashi

Institute of Nuclear Safety System, Inc., Mihama, Fukui, Japan

Hisashi Serizawa, Hidekazu Murakawa

Osaka University, Ibaraki, Osaka, Japan

Paper No. PVP2011-57237, pp. 1437-1449; 13 pages
doi:10.1115/PVP2011-57237
From:
  • ASME 2011 Pressure Vessels and Piping Conference
  • Volume 6: Materials and Fabrication, Parts A and B
  • Baltimore, Maryland, USA, July 17–21, 2011
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 978-0-7918-4456-4
  • Copyright © 2011 by ASME

abstract

An efficient and reliable method for welding residual stress analysis is reported in this paper. The analysis method to calculate the residual stress using the iterative substructure method was developed and compared with a conventional one using a commercial finite element analysis code; comparisons were made for the analysis accuracy and the computational speed of the residual stress in a welded pipe joint. The residual stress distributions obtained by the both methods agreed well with each other. Moreover, it was clarified that the developed method could calculate the residual stress in a shorter computing time and could calculate the residual stress distribution much faster with nearly the same accuracy as the conventional method when the size of the welding structure was large.

Copyright © 2011 by ASME

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