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Title: Modeling relevant to safe operations of U.S. Navy vessels in Arctic conditions : physical modeling of ice loads
Authors: Song, Arnold J.
Lever, J. H.
Bates, Sarah W.
Keywords: Sea ice--Arctic regions
Sea ice drift
Ice floes
Mathematical models
Publisher: Cold Regions Research and Engineering Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: ERDC/CRREL ; SR-16-3
Abstract: The U.S. Navy may need to operate its existing surface ships in Arctic marginal-ice zones with ice concentrations up to 40%. To achieve this goal, the Navy must determine safe operational speeds as a function of ice concentration, floe size, and ice strength for its vessels. However, existing ice-im-pact models and safe-speed guidance for ships have derived from physical modeling and full-scale experience with ice-capable hull forms that have shallow entry angles to promote flexural ice failure preferentially over crushing failure. These models and associated guidance are unlikely to provide accurate estimates of ice forces on the more vertical-sided hulls that are characteristic of U.S. Navy vessels. To address the lack of datasets relevant to the ice impacts on U.S. Navy vessels or like hull forms, this report proposes a series of 1:5 scale tests of ice impacts with a simplified “indentor” to obtain the data needed to in-form and validate numerical models of ice impacts with Navy ships. These large-scale tests will provide important benchmark data to support the development of numerical testbeds where ice-impact forces under various operational scenarios are estimated, thus providing effective safe-speed and design guidance for existing Navy ships in Arctic marginal ice zones.
Description: Special Report
Gov't Doc #: ERDC/CRREL SR-16-3
Rights: Approved for Public Release; Distribution is Unlimited
Size: 51 pages/1.252 Mb
Appears in Collections:Special Report

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