Ultimate strength and collapse behavior of ring-stiffened cylindrical shells under external pressure with shell buckling or stiffener torsional buckling

Daisuke Shiomitsu, Daisuke Yanagihara

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A series of ultimate strength analyses of ring-stiffened cylindrical shells with various dimensions and scantlings is carried out applying the nonlinear finite element method. The detailed buckling/plastic collapse behavior including the influence of initial deflection applied in the ultimate strength analyses is investigated. In most past studies, detailed classification of collapse modes and investigation of the influence of the initial deflection mode have not been sufficiently conducted. In this study, firstly the ultimate strength analyses of 288 cases varying the dimensions of the ring-stiffened cylindrical shell and the attachment direction of the stiffeners, inside or outside, are performed. From the results, the collapse modes are classified into five modes, which are stiffener-torsional buckling collapse (localized deformation mode and mode to keep strength after the ultimate strength), shell buckling collapse (localized deformation mode and mode with kinking lines), and combined collapse of the buckling modes. A slenderness ratio is proposed using elastic buckling strength and pressure when the circumferential stress reaches the yield stress, and the possibility of estimating the ultimate strength is indicated.

Original languageEnglish
Title of host publicationStructures, Safety, and Reliability
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791884331
DOIs
Publication statusPublished - 2020
EventASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2020 - Virtual, Online
Duration: Aug 3 2020Aug 7 2020

Publication series

NameProceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
Volume2B-2020

Conference

ConferenceASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2020
CityVirtual, Online
Period8/3/208/7/20

All Science Journal Classification (ASJC) codes

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

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