SURFACING SUBMARINE THROUGH ICE

A theoretical analysis is presented of the problem of surfacing a submarine through ice. Two criteria are derived, one for the condition when submarine cannot possibly surface. This is when the buoyancy force is just sufficient to produce a first crack in the ice sheet. The other is the condition wh...

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Bibliographic Details
Main Author: ASSUR,A.
Other Authors: ARMY RESEARCH OFFICE WASHINGTON D C
Format: Text
Language:English
Published: 1962
Subjects:
*ICE
*SUBMARINES
HYDRODYNAMICS
LOW TEMPERATURE RESEARCH
MATHEMATICAL ANALYSIS
NAVIGATION
POLAR REGIONS
STRESSES
THEORY
THICKNESS
Ice Sheet
Online Access:http://www.dtic.mil/docs/citations/AD0286658
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0286658
Description
Summary:A theoretical analysis is presented of the problem of surfacing a submarine through ice. Two criteria are derived, one for the condition when submarine cannot possibly surface. This is when the buoyancy force is just sufficient to produce a first crack in the ice sheet. The other is the condition when breakthrough can be acc mplished. Breakthrough tests performed by CRREL with loads from above show the range between such criteria. Another consideration is whether the submarine applies a force topping at rest against the iiiiiiiiiiiiiiiiiiiiiiiiiiiii or whether it approaches the ice sheet with a vertical velocity. In the first case the force required under static loading is computed, in the second case the energy required to penetrate under impact load. Criteria are derived both from t e elastic theory and for plastic failure on the basis of collapse mechanics. (Author)

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