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Crack Growth Simulation Under Complicated Stress Field Using S-Version FEM

[+] Author Affiliations
Koichi Masaki, Kazuya Osakabe

Mizuho Information & Research Institute, Chiyoda-ku, Japan

Akiyuki Takahashi, Masanori Kikuchi

Tokyo University of Science, Noda, Japan

Yoshitaka Wada

Kinki University, Higashiosaka, Japan

Paper No. PVP2016-63698, pp. V06AT06A010; 8 pages
doi:10.1115/PVP2016-63698
From:
  • ASME 2016 Pressure Vessels and Piping Conference
  • Volume 6A: Materials and Fabrication
  • Vancouver, British Columbia, Canada, July 17–21, 2016
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 978-0-7918-5042-8
  • Copyright © 2016 by ASME

abstract

In the S-version finite element method (S-FEM), a local detailed finite element mesh (local mesh) is superimposed on a coarse finite element model (global mesh) representing the global structure. In the S-FEM developed by Tokyo University of Science, the virtual crack closure integral method is employed to evaluate the stress intensity factor, and a local mesh is re-meshed automatically, which enables easy simulations of crack growth by users. Using S-FEM, crack growth can be simulated in both two- and three-dimensional stress fields, under thermal stress field, under welding residual stress field, and in multiple materials. This paper reports the latest results of the simulations of crack growth in the presence of complicated stress fields.

Copyright © 2016 by ASME

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