Structural Engineering and Mechanics

  • 제70권4호
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  • Pages.431-443
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  • 2019
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Numerical studies of the failure modes of ring-stiffened cylinders under hydrostatic pressure

  • Muttaqie, Teguh (Department of Naval Architecture and Marine Systems Engineering, Pukyong National University) ;
  • Thang, Do Quang (Department of Naval Architecture and Ocean Engineering, Nha Trang University) ;
  • Prabowo, Aditya Rio (Department of Mechanical Engineering, Sebelas Maret University) ;
  • Cho, Sang-Rai (School of Naval Architecture and Ocean Engineering, University of Ulsan) ;
  • Sohn, Jung Min (Department of Naval Architecture and Marine Systems Engineering, Pukyong National University)
  • 투고 : 2018.10.17
  • 심사 : 2019.03.08
  • 발행 : 2019.05.25
⟨ 이전 논문 다음 논문 ⟩

초록

The present paper illustrates a numerical investigation on the failure behaviour of ring-stiffened cylinder subjected to external hydrostatic pressure. The published test data of steel welded ring-stiffened cylinder are surveyed and collected. Eight test models are chosen for the verification of the modelling and FE analyses procedures. The imperfection as the consequences of the fabrication processes, such as initial geometric deformation and residual stresses due to welding and cold forming, which reduced the ultimate strength, are simulated. The results show that the collapse pressure and failure mode predicted by the nonlinear FE analyses agree acceptably with the experimental results. In addition, the failure mode parameter obtained from the characteristic pressure such as interframe buckling pressure known as local buckling pressure, overall buckling pressure, and yield pressure are also examined through the collected data and shows a good correlation. A parametric study is then conducted to confirm the failure progression as the basic parameters such as the shell radius, thickness, overall length of the compartment, and stiffener spacing are varied.

키워드

참고문헌

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