Bending and compressive strength of stiffened panels with crack damage in longitudinal stiffeners

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Abstract

This study examines stiffened panels with crack damage in a longitudinal stiffener. The crack is installed near a joint line with a transverse frame. Finite Element analysis (FEA) is performed to clarify the collapse behavior and residual strength of the cracked panels subjected to lateral water pressure and in-plane compression. The influence of the dimensions of the stiffened panel and the number of stiffeners on the collapse behavior is examined. The results indicate that the crack does not affect the bending strength of a thick stiffened panel under lateral pressure, but may reduce the strength of a thin panel. The crack reduces the compressive ultimate strength when the panel has such deep stiffeners that the overall buckling deformation does not increase. In a panel with small stiffeners, the crack constrains the growth of the overall buckling deformation and increases the ultimate strength. Simplified methods are proposed for estimating the reduced strength of the stiffened panel with the crack under in-plane compression. The benefits of the methods are validated through comparison with FEA results.

Original languageEnglish
Title of host publicationProceedings of the 24th International Ocean and Polar Engineering Conference, ISOPE Busan
PublisherInternational Society of Offshore and Polar Engineers
Pages671-678
Number of pages8
ISBN (Print)9781880653913
Publication statusPublished - Jan 1 2014
Externally publishedYes
Event24th International Ocean and Polar Engineering Conference, ISOPE 2014 Busan - Busan, Korea, Republic of
Duration: Jun 15 2014Jun 20 2014

Other

Other24th International Ocean and Polar Engineering Conference, ISOPE 2014 Busan
CountryKorea, Republic of
CityBusan
Period6/15/146/20/14

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All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Mechanical Engineering
  • Ocean Engineering

Cite this

Yanagihara, D. (2014). Bending and compressive strength of stiffened panels with crack damage in longitudinal stiffeners. In Proceedings of the 24th International Ocean and Polar Engineering Conference, ISOPE Busan (pp. 671-678). International Society of Offshore and Polar Engineers.