Abstract
A plasticity formulation is used to develop a material model for ductile ice crushing. The model includes rate and pressure sensitivity, strain softening, and dependence on volumetric deformations. A nonassociated flow rule is adopted for the plastic potential. A relationship is then proposed which relates the plastic potential to the yield function. This relationship permits volumetric deformations to be calculated directly from measured stress strain curves. These calculations show good qualitative agreement with experimental measurements of volume change. A brittle failure criterion based on dilatant deformation follows naturally from the plastic potential. The model is intended for application to ice indentation problems where crushing is the dominant failure mode.
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© 1991 Springer-Verlag Berlin Heidelberg
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Dorris, J.F. (1991). A Plasticity Model for the Crushing of Ice. In: Jones, S., Tillotson, J., McKenna, R.F., Jordaan, I.J. (eds) Ice-Structure Interaction. International Union of Theoretical and Applied Mechanics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-84100-2_16
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DOI: https://doi.org/10.1007/978-3-642-84100-2_16
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