RESEARCH PAPERS: Arctic Engineering

Three-Dimensional Ductile Constitutive Equation for Ice

[+] Author and Article Information
K. Santaoja

Technical Research Centre of Finland, Metals Laboratory, Espoo, Finland

J. Offshore Mech. Arct. Eng 112(3), 270-275 (Aug 01, 1990) (6 pages) doi:10.1115/1.2919866 History: Revised October 24, 1989; Received February 28, 1990


In the present paper the constitutive equation for polycrystalline materials, such as ice at wide temperature and strain rate range, is studied. The following deformation mechanisms of the material are examined: instantaneous linear elasticity, viscoelasticity, and viscoplasticity. The uniaxial material model is based on the theory proposed by Sinha. The delayed elastic strain is predicted by the modification introduced by Ashby and Duval to the equation of Sinha. A multiaxial theory to represent the reponse of isotropic polycrystalline material is developed. The multiaxial material model, called the SADS-model, coincides in case of uniaxial tension with the Ashby and Duval modification of the equations proposed by Sinha.

Copyright © 1990 by The American Society of Mechanical Engineers
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