An Anisotropic Clay Plasticity Model for the Cyclic Resistance

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Abstract

In this paper, an advanced critical state compatible Bounding Surface (BS) plasticity model for the cyclic response of clays is developed based on a prior version of a Simple Anisotropic CLAY plasticity (SANICLAY) model. With the proposed model, named SANICLAY-BS and abbreviated as S-BS, it is possible to capture the presence of a cyclic stress threshold above which large strains develop leading to the effective stress failure. In addition, the number of cycles to failure can be controlled for a wide range of applied CSRs. Peculiarity of the formulation is the incorporation of a novel activation mechanism into the destructuration law. Model performances in capturing a cyclic resistance curve are shown against the experimental data of Cloverdale clay.