Extreme value prediction of the wave-induced vertical bending moment in large container ships

Ingrid Marie Vincent Andersen, Jørgen Juncher Jensen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

Container ships of today are becoming increasingly larger. The increased ship size implies lower natural hull frequencies which influence the hull girder response in waves. The large bow and stern flare of container ships make them vulnerable to whipping-induced loads, and whipping loads may increase the extreme hull girder response significantly. Focus in the present paper is on the influence of the hull girder flexibility on the extreme response amidships, namely the wave-induced vertical bending moment (VBM) in hogging, and the prediction of the extreme value of the same. The analysis in the present paper is based on time series of full scale measurements from three large container ships of 8600, 9400 and 14000 TEU. When carrying out the extreme value estimation the peak-over-threshold (POT) method combined with an appropriate extreme value distribution is applied. The choice of a proper threshold level as well as the statistical correlation between clustered peaks influence the extreme value prediction and are taken into consideration in the present paper.
Original languageEnglish
Title of host publicationProceedings of the 7th International Conference on Hydroelasticity in Marine Technology
Publication date2015
Pages389-402
Publication statusPublished - 2015
Event7th International Conference on Hydroelasticity in Marine Technology - Radisson Blu Resort, Split, Croatia
Duration: 16 Sep 201519 Sep 2015
http://hyel2015.com/

Conference

Conference7th International Conference on Hydroelasticity in Marine Technology
Location Radisson Blu Resort
CountryCroatia
CitySplit
Period16/09/201519/09/2015
Internet address

Keywords

  • Extreme value prediction
  • Hull girder flexibility
  • Vertical bending moment
  • Wave-induced loads
  • Hydro-elastic effects

Cite this

Andersen, I. M. V., & Jensen, J. J. (2015). Extreme value prediction of the wave-induced vertical bending moment in large container ships. In Proceedings of the 7th International Conference on Hydroelasticity in Marine Technology (pp. 389-402)