On the Assessment of Extreme Wave-Induced Bending Moment of a Ship by FORM and Reduced Order Method Based on Coupled CFD and FEA

In this paper, an extreme value problem on the wave-induced vertical bending moment (WVBM) of a ship is addressed. The First Order Reliability Method (FORM) is adopted to predict the extreme value distribution of the WVBM under given short-term sea states. The one-way coupled Computational Fluid Dynamics (CFD) and Finite Element Analysis (FEA) is employed to obtain numerical solutions of the WVBM. To predict the extreme value distribution based on the coupled CFD-FEA, the Reduced Order Method (ROM) is further introduced as a surrogate model for the CFD-FEA. By combining the ROM and FORM, the extreme value prediction equivalent to the coupled CFD-FEA can be estimated in a robust but inexpensive manner. The present ROM is composed of the transfer function (TF) of the WVBM and a simple correction for the nonlinearity. The accuracy of the ROM is validated by comparing with the coupled CFD-FEA results. A series of numerical demonstrations on the extreme value distribution of the WVBM using the ROM and FORM under moderate and severe sea conditions is given.

• Record URL:
  • https://doi.org/10.1007/978-981-15-4624-2_42
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9789811546235
• Supplemental Notes:
  • © Springer Nature Singapore Pte Ltd. 2021.
• Corporate Authors:

  Springer Singapore

  152 Beach Road
  Singapore,     189721
• Authors:
  • Takami, Tomoki
  • Ozeki, Shohei
  • Iijima, Kazuhiro
• Conference:
  • 14th International Symposium of Practical Design of Ships and Other Floating Structures (PRADS 2019)
  • Location: Yokohama , Japan
  • Date: 2019-9-22 to 2019-9-26
• Publication Date: 2020-10

Language

• English

Media Info

• Media Type: Web
• Edition: 1
• Features: References;
• Pagination: pp 691-702
• Monograph Title: Practical Design of Ships and Other Floating Structures: Proceedings of the 14th International Symposium, PRADS 2019, September 22-26, 2019, Yokohama, Japan- Volume I
• Serial:
  • Volume: 1

Subject/Index Terms

• TRT Terms: Bending moments; Finite element method; Fluid dynamics; Ship bodies; Waves
• Subject Areas: Design; Hydraulics and Hydrology; Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 01919016
• Record Type: Publication
• ISBN: 9789811546235
• Files: TRIS
• Created Date: May 20 2024 2:02PM