General instability of ring-stiffened cylindrical shells under external pressure

Y. Yamamoto, Y. Homma, K. Oshima, Y. Mishiro, H. Terada, T. Yoshikawa, H. Morihana, Y. Yamauchi, M. Takenaka

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Abstract

Recent advances of numerically controlled machining enable the accurate estimation of buckling pressure of stiffened cylindrical shells by experiments. Machined models can be regarded as perfectly cyclindrical shells, and the validity of modeling for numerical methods is confirmed by comparing theoretical results with experiments. In the present paper, the so-called general instability of stiffened cyclindrical shells is investigated. Actual shells are fabricated by welding, and have inevitable initial deflections which result in reduction of buckling pressure due to imperfection sensitivity. The reduction factor is discussed in relation to the evaluation method of initial deflections in actual shells.

Original languageEnglish
Pages (from-to)133-149
Number of pages17
JournalMarine Structures
Volume2
Issue number2
DOIs
Publication statusPublished - 1989

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Ocean Engineering
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Yamamoto, Y., Homma, Y., Oshima, K., Mishiro, Y., Terada, H., Yoshikawa, T., ... Takenaka, M. (1989). General instability of ring-stiffened cylindrical shells under external pressure. Marine Structures, 2(2), 133-149. https://doi.org/10.1016/0951-8339(89)90009-9