Probability of Failure of Damaged Ship Structures – Phase 2


  1. Akpan, U.
  2. Yuen, B.
  3. Shahin, K.
  4. Koko, T.S.
  5. Lin, F.
Corporate Authors
Defence R&D Canada - Atlantic, Dartmouth NS (CAN);MARTEC Ltd, Halifax NS (CAN)
The Phase II report lays out a methodology for assessing the reliability of ships in a damaged condition and looks into the suitability of available tools. Tools for assessing the extent of damage are discussed and algorithms are proposed for computing and combining short term loads on a damaged ship including stillwater and wave loads. A methodology is presented for analysing the residual strength of a damaged vessel that uses the simplified tool, ULTMAT, and the advanced tool TRIDENT. Formulas which can be used for deterministic structural integrity of a damaged vessel are advanced in the form of interactive equations that define the safe envelop of operation. Additionally, reliability analysis methods are developed that account for uncertainties in the loading, structural strength and models used for assessing a damaged vessel. Further study of the damage arising from ship-to-ship collisions is carried out using LS-DYNA to augment the result from the Phase 1 study.

Il y a un résumé en français ici.

Report Number
DRDC-ATLANTIC-CR-2012-010 — Contract Report
Date of publication
01 May 2012
Number of Pages
Electronic Document(PDF)

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