Analysis of data from Bergy Bit impacts using a novel-hull mounted external impact panel

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DOIResolve DOI: http://doi.org/10.1016/j.coldregions.2007.04.018
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TypeArticle
Journal titleCold Regions Science and Technology
Volume52
Issue1
Pages5066; # of pages: 17
AbstractA new impact panel has been used to measure forces and pressures during collisions of a ship (CCGS Terry Fox) with bergy bits and a small iceberg. Data were acquired from impacts on bergy bits of various sizes (100 - 22,000 tonnes) and over a range of ship speeds (5-12 kt). The data indicate that a typical zone of ice contact during a collision is comprised of a small irregular shaped area of relatively intact ice, where the pressure is high (8-20 MPa) and roughly uniform, that is usually surrounded by a larger area of pulverized ice, where the pressure is low (~2.5 MPa). The maximum estimated force measured was around 2.4 MN. The relatively low force values were attributed to the slanted shape of the impacted hull resulting in a glancing/sliding type of impact with limited ice penetration. Duration of impacts was in the 0.2 ? 0.6 s range. Pressure on the hard zones was observed to increase as the hard zone area increased.
Publication date
AffiliationNRC Institute for Ocean Technology; National Research Council Canada
Peer reviewedYes
IdentifierIR-2006-14
NRC number6357
NPARC number8894945
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Record identifier029b986a-e2b9-497d-949a-b8734d8ba86a
Record created2009-04-22
Record modified2016-05-09
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