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Constitutive Equations for Ice as a Damaging Material

by Dale G. Karr, MIT, Dep of Ocean Engineering, Cambridge, MA, USA,



Document Type: Proceeding Paper

Part of: Civil Engineering in the Arctic Offshore

Abstract:

Constitutive equations for ice subjected to uniaxial compression are developed based on applications of the theory of continuous damage mechanics. A physical model of ice deformation response is proposed which reflects the interaction of elastic, viscous and brittle deformation processes. Stress/strain/strain-rate relations for isotropic polycrystalline ice and sea ice are presented in which the salient features of typical stress-strain curves and creep curves can be predicted.

Subject Headings: Ice | Sea ice | Constitutive relations | Deformation (mechanics) | Damage (material) | Curvature | Stress strain relations

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