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Smoothed particle hydrodynamics for cohesive grains. (English) Zbl 0963.74078
Summary: A rheology based on the Mohr-Coulomb yield criterion for cohesive materials is implemented in the framework of smoothed particle hydrodynamics (SPH). We enhance the classical SPH approaches by using some conservative renormalization techniques and a new smoothing kernel which improves the stability of the code near discontinuities. We apply this approach to the simulation of broken-ice fields floating on the water surface and moving under the effect of wind forces. When broken-ice fields are regarded as a continuum, their rheological behavior can be described by a model known as viscoplastic. The ice field is modeled as a viscous fluid for very small strain rates and is assumed to flow plastically otherwise. In the plastic regime the stress states are described in terms of the Mohr-Coulomb yield criterion.
MSC:
74S30Other numerical methods in solid mechanics
74E20Granularity
86A40Glaciology