Analysis of the event-maximum method for the prediction of local pressures on a ship's hull in the antarctic ice

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

1 Citation (Scopus)

Abstract

The hull of a ship operating in ice might be exposed to significant ice loading, originating from a complex and stochastic interaction between the hull and the ice. In order to analyze such ice loading, statistical methods can be used. In this context, the estimation of the local ice pressures on various locations of a ship’s hull is required. This study aims to analyze a semi-empirical method known as the event-maximum method, which estimates the maximum local pressures as a function of the contact area and the ice condition. To this end, this study uses the full-scale ice load measurements to determine a new set of curves describing the relationship between the contact area and the local pressures. The obtained curves are subsequently compared with corresponding curves determined in previous studies using different datasets. The results show that the curves obtained in this study are close to those obtained in previous studies. In addition, a sensitivity analysis is carried out to assess the sensitivity of the predicted local ice pressures to variations in the assumed load height. The sensitivity analysis shows that the predicted maximum local pressure is relatively insensitive to variations in the assumed load height. Furthermore, the study indicates that the event-maximum method might be overly conservative and discusses various approaches to overcome this challenge.

Original languageEnglish
Title of host publicationPOAC 2019 - 25th International Conference on Port and Ocean Engineering under Arctic Conditions
Publication statusPublished - Sep 2019
MoE publication typeA4 Article in a conference publication
EventInternational Conference on Port and Ocean Engineering under Arctic Condition - TU Delft, Delft, Netherlands
Duration: 9 Jun 201913 Jun 2019
Conference number: 25

Publication series

NameProceedings of the International Conference on Port and Ocean Engineering under Arctic Conditions, POAC
Volume2019-June
ISSN (Print)0376-6756
ISSN (Electronic)2077-7841

Conference

ConferenceInternational Conference on Port and Ocean Engineering under Arctic Condition
Abbreviated titlePOAC
CountryNetherlands
CityDelft
Period09/06/201913/06/2019

Keywords

  • Event-maximum method
  • Ice-induced loading
  • Local ice pressure
  • Probabilistic methods
  • Ship-ice interaction

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