Effect of ship speed on level ice edge breaking

DOIResolve DOI: http://doi.org/10.1115/OMAE2014-24101
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Proceedings titleProceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
ConferenceASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2014, 8 June 2014 through 13 June 2014
SubjectMaterials properties; Ocean engineering; Ships; Speed; Breaking process; Empirical model; Flexural behavior; Flexural failure; Interaction process; Linear elastic material; Material models; Structural standards; Ice
AbstractThis paper presents a numerical model of ship ice-wedge interaction to study the effect of ship speed on level ice edge breaking. The interaction process is modeled using LS-DYNA. The developed model considers ice crushing, ice flexural failure and the water foundation effect. For the ice, two different plasticity-based material models are used to represent ice crushing and ice flexural behaviors. The water foundation effect is modeled using a simple linear elastic material. The analysis is performed for a ship speed range of 0.1 to 5 ms-1 and ice thickness of 0.5 to 1.5 m. The analysis indicates that both ship speed and ice thickness significantly affect the ice breaking process. The model results are in good agreement with a number of analytical and empirical models. The model can be useful in establishing a rational basis for safe speed criteria, improving ship structural standards and tools for ice management capability assessment.
Publication date
PublisherAmerican Society of Mechanical Engineers
AffiliationOcean, Coastal and River Engineering; National Research Council Canada
Peer reviewedYes
NRC numberOCRE-PR-2014-006
NPARC number21275488
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Record identifierce16ff0f-842d-4fb5-9508-8f7ad1f9553c
Record created2015-07-14
Record modified2016-05-09
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