Global Ice Forces and Ship Response to Ice

Abstract

During September and October of 1985 the Polar Sea conducted ice impact tests on heavily ridged ice features in the Alaskan portion of the Beaufort Sea. Bending strain gage measurements were used to estimate the longitude bending moment distribution of the Polar Sea during impacts with ice pressure ridges. Compressive strains along the stem and ship acceleration and velocity measurements were also recorded. This paper describes the methodology for determining the global ice impact force from the measurements and presents the results of these tests. A comparison of the results with other available data is also presented. A comparison of the results with other available data is also presented. Hull strain, and impact force time histories are presented along with the longitude bending and shear distributions during ice impact events. The results indicate that the methodology used in estimating the impact force provided an excellent understanding of ship-ice interaction.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1990
Accession Number
ADA231529

Entities

People

  • B. Cowper
  • J. St. John
  • M. Edgecombe
  • P. Minnick

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Accuracy
  • Acquisition
  • Beaufort Sea
  • Bending Moments
  • Bending Stress
  • Calibration
  • Coast Guard
  • Data Acquisition
  • Design Criteria
  • Electronic Equipment
  • Equations
  • Frequency
  • Impact Tests
  • Instrumentation
  • Measurement
  • Modulus Of Elasticity
  • Strain Gages

Fields of Study

  • Engineering
  • Environmental science

Readers

  • Environmental Impact Assessment (EIA) of Proposed Air Force Base Actions.
  • Maritime Security/Maritime Homeland Security
  • Mechanical Engineering/Mechanics of Materials.