Impact mechanics of ship collisions and validations with experimental results

Shengming Zhang, R. Villavicencio, L. Zhu, Preben Terndrup Pedersen

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Closed-form analytical solutions for the energy released for deforming and crushing ofstructures and the impact impulse during ship collisions were developed and published inMarine Structures in 1998 [1]. The proposed mathematical models have been used bymany engineers and researchers although the methods were only validated with timedomain numerical simulation results at that time. Since then, model and full-scale measurementshave been carried out and experimental results are available in the publicdomain. The purpose of the present paper is to use such experimental results to furtheranalyze the validity and robustness of the closed-form analytical methods as well as tofurther improve some parameter's accuracy. In total, 60 experimental results have beenanalyzed and compared with the analytical results and this paper presents the outcome. Itcan be concluded that the analytical methods give a reasonable agreement with theexperimental results. The paper also introduces a simple concept to account for theeffective mass of liquids with free surface carried on board of a ship and it is shown howthe analytical analysis procedure can be expanded to take into account the effect of shiproll on the energy released for crushing.
Original languageEnglish
JournalMarine Structures
Volume52
Pages (from-to)69-81
ISSN0951-8339
DOIs
Publication statusPublished - 2017

Keywords

  • Ship collision
  • Collision energy
  • Closed-form solution
  • Added mass coefficient
  • Effective mass for liquid
  • Experimental result

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