Residual ultimate strength of a very large crude carrier considering probabilistic damage extents

Joonmo Choung, Ji Myung Nam*, Gökhan Tansel Tayyar

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

This paper provides the prediction of ultimate longitudinal strengths of the hull girders of a very large crude carrier considering probabilistic damage extent due to collision and grounding accidents based on IMO Guidelines (2003). The probabilistic density functions of damage extent are expressed as a function of non-dimensional damage variables. The accumulated probabilistic levels of 10%, 30%, 50%, and 70% are taken into account for the estimation of damage extent. The ultimate strengths have been calculated using the in-house software called Ultimate Moment Analysis of Damaged Ships which is based on the progressive collapse method, with a new convergence criterion of force vector equilibrium. Damage indices are provided for several probable heeling angles from 0° (sagging) to 180° (hogging) due to collision- and grounding-induced structural failures and consequent flooding of compartments. This paper proves from the residual strength analyses that the second moment of area of a damage section can be a reliable index for the estimation of the residual ultimate strength. A simple polynomial formula is also proposed based on minimum residual ultimate strengths.

Original languageEnglish
Pages (from-to)14-26
Number of pages13
JournalInternational Journal of Naval Architecture and Ocean Engineering
Volume6
Issue number1
DOIs
Publication statusPublished - 2014

Funding

This work was supported by a Special Education Program for Offshore Plant by the Ministry of Trade, Industry and Energy Affairs (MOTIE). This work was also supported by a Manpower Development Program for Marine Energy by the Ministry of Oceans and Fisheries (MOF). The authors are grateful to INHA University for funding research grant.

FundersFunder number
Ministry of Trade, Industry and Energy Affairs
Inha University
Ministry of Trade, Industry and Energy
Ministry of Oceans and Fisheries

    Keywords

    • Collision
    • Damage index
    • Grounding
    • Moment plane
    • Neutral axis plane
    • Probabilistic damage extent
    • Residual ultimate strength

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