A viscoelastic damage model for polycrystalline ice,inspired by Weibull-distributed fiber bundle models. Part I: Constitutive models |
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Authors: | Arne Keller Kolumban Hutter |
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Affiliation: | 1. Laboratory of Hydraulics, Hydrology and Glaciology (VAW), ETH Zürich, Wolfgang-Pauli-Str. 27, 8093, Zurich, Switzerland
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Abstract: | We consider a constitutive model for polycrystalline ice, which contains delayed-elastic and viscous deformations, and a damage variable. The damage variable is coupled to the delayed-elastic deformation by a fiber bundle ansatz. We construct an isotropic theory, which can be calibrated with experimental data. Furthermore, we generalize the theory to a damage model in terms of rank-four tensors. This general model allows the evolution of anisotropic damage. |
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