Constant stress rate deformation modulus of ice

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ConferencePOAC 81: Proc. Sixth Int. Conf. on Port Ocean Engineering under Arctic Conditions: 27 July 1981, Quebec City
Pages21624; # of pages: 193
Subjectice; creep; deformation modulus; continuous stresses; mechanical properties; fluage; module de deformation; sollicitation constante; propriete mecanique
AbstractA generalized, constant-stress creep equation incorporating the effect of grain size for polycrystalline materials is presented and used in calculating ice stress-strain diagrams for constant stress rate loading conditions. It is shown that the effective modulus, determined from the initial part of these diagrams, increases with increase in rate of loading, increase in grain size, and decrease in temperature, in agreement with general observations on ice. Measurements on fresh-water and sea ice are presented and compared with the theoretical predictions. It is shown that the lower effective modulus for sea ice in comparison with that for fresh-water lake or river ice under similar conditions of temperature and rate of loading is due mainly to the differences in the microstructure and not necessarily to the salt content of sea ice. Sub-grains are shown to be a significant factor in controlling the deformation behaviour of ice.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number19753
NPARC number20386297
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Record identifier54cb4cb7-b375-48ee-84a8-2ceff1578dce
Record created2012-07-25
Record modified2016-05-09
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