Global Ice Forces and Ship Response to Ice

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...

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Bibliographic Details
Main Authors: Minnick, P., St John, J., Cowper, B., Edgecombe, M.
Other Authors: ARCTEC INC COLUMBIA MD
Format: Text
Language:English
Published: 1990
Subjects:
Snow
Ice and Permafrost
Marine Engineering
*VELOCITY
GLOBAL
SHIPS
IMPACT
ACCELERATION
IMPACT TESTS
LOADS(FORCES)
COMPARISON
BENDING
TIME
ICE
RESPONSE
HISTORY
PRESSURE
STRAIN GAGES
BENDING MOMENTS
LONGITUDE
RIDGES
BEAUFORT SEA
MEASUREMENT
*ICEBREAKERS
*SEA ICE
ICE LOADS
SHIP HULLS.
Beaufort Sea
Ice
permafrost
Sea ice
Online Access:http://www.dtic.mil/docs/citations/ADA231529
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA231529
Description
Summary: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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