A constitutive model for isotropic freshwater ice

  1. Get@NRC: A constitutive model for isotropic freshwater ice (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1139/cgj-38-4-818
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Journal titleCanadian Geotechnical Journal
Pages818827; # of pages: 10
Subjectisotropic freshwater ice; constitutive model; damaged ice; crack kinetics; cyclic loading; softening
AbstractA three-dimensional constitutive model is developed to describe the stress-strain behaviour of isotropic freshwater ice. The model consists of two sets of equations. The first set deals with the behaviour of intact ice (undamaged material), and the second set accounts for the effect of damage (microcracking) on the overall stress-strain behaviour of ice. The intact-ice model (the first set of equations) is developed on the basis of the traditional viscoelasticity and viscoplasticity theories, whereas the damaged-ice model (the second set of equations) is developed using the rate theory for crack kinetics. The results of several uniaxial and triaxial tests are used to evaluate the accuracy of the model predictions. The comparisons between the predicted and measured stress-strain curves indicate that the model predicts reasonably well the strength of ice, the effect of damage, and the postpeak behaviour (including softening) of ice subjected to monotonic loading and unloading-reloading cycles.
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AffiliationNRC Institute for Ocean Technology; National Research Council Canada
Peer reviewedYes
NRC number5141
NPARC number8895733
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Record identifierc9851e20-2620-4c41-87fc-c0c8f1157641
Record created2009-04-22
Record modified2016-05-09
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