1. ERDC Knowledge Core
  2. Engineer Research and Development Center (ERDC)
  3. Cold Regions Research Engineering Laboratory (CRREL) - (2/1/1961 - present)
  4. Publication
  5. Special Report
Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/29536
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dc.contributor.authorSong, Arnold J.-
dc.contributor.authorParno, Matthew D.-
dc.contributor.authorWest, Brendan A.-
dc.contributor.authorO'Connor, Devin T.-
dc.date.accessioned2018-10-03T13:06:41Z-
dc.date.available2018-10-03T13:06:41Z-
dc.date.issued2018-09-
dc.identifier.govdocERDC/CRREL SR-18-2-
dc.identifier.urihttp://hdl.handle.net/11681/29536-
dc.identifier.urihttp://dx.doi.org/10.21079/11681/29536-
dc.descriptionSpecial Report-
dc.description.abstractThe Arctic is undergoing profound and rapid change. Diminishing ice in the Arctic will lead to significant changes in the region’s activity level as sea routes begin to open and ice conditions become less restrictive. The U.S. Navy may be asked to operate in waters with up to 40% ice cover. This work addresses Navy Arctic Roadmap action items to understand the capability, limitations, and operational considerations for successful and safe operation of naval surface vessels in the presence of ice. Current ice impact models were developed for impact scenarios and hull forms more appropriate for Polar Class ships rather than naval hull forms. The primary unknowns needed to assess operational risks are the magnitude of the pressures that a surface vessel may experience in the case of an ice impact and the structural response to those impact pressures. For this work, we are solely interested in estimating the location and pressures of ice impacts on combatant hull forms. We present an alternative approach that uses the DEM approach to modeling the ice impact problem.en_US
dc.description.sponsorshipUnited States. Office of Naval Research.en_US
dc.description.tableofcontentsAbstract .................................................................................................................................... ii Figures and Tables .................................................................................................................. iv Preface ..................................................................................................................................... vi 1 Introduction ...................................................................................................................... 1 1.1 Background and motivation .............................................................................. 1 1.2 U.S. Navy Artic roadmap .................................................................................... 3 1.3 Objective............................................................................................................. 4 2 Ice Impacts and Ship Design .......................................................................................... 5 2.1 Classification rules and design guidance ........................................................ 5 2.2 Polar UR.............................................................................................................. 7 2.2.1 Design guidance ......................................................................................................... 7 2.2.2 Polar UR background .................................................................................................. 8 2.3 Limitations of the Polar UR ice model for Navy ships...................................... 9 3 Discrete Element Method ............................................................................................. 12 3.1 Dilated polyhedra ........................................................................................... 12 3.2 Cohesive beam ................................................................................................15 4 Results ............................................................................................................................. 18 4.1 Goals and objectives ...................................................................................... 18 4.2 Ice impact loads comparison between icebreaking and combatant hull forms .................................................................................................................. 18 4.2.1 Ice floe geometry and properties ............................................................................. 19 4.2.2 Polar sea impact forces ............................................................................................ 20 4.2.3 Hull 3000 impact forces ........................................................................................... 23 4.3 High-resolution ice floe simulations .............................................................. 26 5 Conclusions .................................................................................................................... 30 5.1 Future considerations ..................................................................................... 31 References ............................................................................................................................. 33 Report Documentation Page-
dc.format.extent44 pages / 2.63 Mb-
dc.format.mediumPDF/A-
dc.language.isoen_USen_US
dc.publisherCold Regions Research and Engineering Laboratory (U.S.)en_US
dc.publisherEngineer Research and Development Center (U.S.)en_US
dc.relation.ispartofseriesTechnical Report (Engineer Research and Development Center (U.S.)) ; no. ERDC/CRREL SR-18-2-
dc.rightsApproved for Public Release; Distribution is Unlimited-
dc.sourceThis Digital Resource was created in Microsoft Word and Adobe Acrobat-
dc.subjectArctic regions--Sea iceen_US
dc.subjectArctic regions--Ice floesen_US
dc.subjectArctic regions--Naval operationsen_US
dc.subjectIce mechanicsen_US
dc.subjectIce navigationen_US
dc.subjectMathematical modelsen_US
dc.titleModeling relevant to safe operations of naval vessels in Arctic conditions : numerical modeling of ice loadsen_US
dc.typeReporten_US
Appears in Collections:Special Report

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