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Finite Element Analysis on the Hull Girder Ultimate Strength of Asymmetrically Damaged Ships

[+] Author Affiliations
Muhammad Zubair Muis Alie, Ganding Sitepu, Juswan Sade, Wahyuddin Mustafa, Andi Mursid Nugraha, Alamsyah Bin Muh. Saleh

Hasanuddin University, Makassar, Indonesia

Paper No. OMAE2016-54041, pp. V003T02A083; 10 pages
doi:10.1115/OMAE2016-54041
From:
  • ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 3: Structures, Safety and Reliability
  • Busan, South Korea, June 19–24, 2016
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-4994-1
  • Copyright © 2016 by ASME

abstract

This paper discusses the influence of asymmetrically damaged ships on the ultimate hull girder strength. When such damages take place at the asymmetric location of cross sections, not only translation but also inclination of instantaneous neutral axis takes place during the process of the progressive collapse. To investigate this effect, the Finite Element Analysis (FEA) is employed and the damage is assumed in the middle hold. The collision damage is modeled by removing the plate and stiffener elements at the damage region assuming the complete loss of the capacity at the damage part.

For the validation results obtained by Finite Element Analysis of the asymmetrically damaged ship hull girder, the simplified method is adopted. The Finite Element method of ultimate strength analysis of a damaged hull girder can be a practical tool for the ship hull girder after damages, which has become one of the functional requirements in IMO Goal Based Ship Construction Standard.

Copyright © 2016 by ASME

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