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Crack Initiation Strength of Structural Steel Members Having Experienced Large Compressive Strain

[+] Author Affiliations
Hiroshi Yajima, Yunbo Kho, Susumu Satoh, Kazuto Nishikawa

Nagasaki Institute of Applied Science, Nagasaki, Japan

Motomichi Yamamoto

Hiroshima University, Hiroshima, Japan

Paper No. OMAE2002-28187, pp. 145-154; 10 pages
doi:10.1115/OMAE2002-28187
From:
  • ASME 2002 21st International Conference on Offshore Mechanics and Arctic Engineering
  • 21st International Conference on Offshore Mechanics and Arctic Engineering, Volume 3
  • Oslo, Norway, June 23–28, 2002
  • Conference Sponsors: Ocean, Offshore, and Arctic Engineering Division
  • ISBN: 0-7918-3613-4 | eISBN: 0-7918-3599-5
  • Copyright © 2002 by ASME

abstract

In the present report, an attempt was made to quantify the crack initiation strength for structural steel members having experienced large compressive prestrain due to buckling collapse. First, a tension test of the prestrained material was performed on JIS SS400 steel. The influence of prestraining on the mechanical properties of the material was investigated. Next, a crack initiation test and an elastoplastic large deformation FE-analysis for strip specimens were performed. The specimens were bent into various curvatures after undergoing buckling and the relationship between crack initiation and applied straining was examined. Finally, in order to investigate the crack initiation behavior for structural members subjected to cyclic bending load after undergoing buckling collapse, a crack initiation test and an elastoplastic large deformation FE-analysis for strip specimens under cyclic bending load were performed.

Copyright © 2002 by ASME

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