Claudio Tamagnini , René Chambon , Denis Caillerie
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A second gradient elastoplastic cohesive-frictional model for geomaterials
Starting from some experimental observations on shear strength of stiff clays [3,2], a isotropic, geometrically non-linear second gradient elastoplastic model is proposed for pressure dependent, brittle geomaterials. The development of the model follows the general theory presented in [1]. Due to the internal length scale provided by the microstructure, the model is ideally suited for the analysis of failure problems in which strain localization into shear band occurs, see, e.g., [4,5].
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