On Regularization of Plastic Flow Localization in a Soil Material
Density-dependent critical state line (Cam-Clay type) model is regularized by viscoplastic formulation to assure the mathematical well-posedness of the initial Cauchy problem. In computations this reduces the so-called Primary Mesh Dependence which is defined in the paper. Several numerical examples of two-dimensional plane strain pillar problem confirm the validity of the proposed formulation and its usefulness in numerical calculations.
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