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SANICLAY-T: Simple thermodynamic-based anisotropic plasticity model for clays
Computers and Geotechnics ( IF 5.3 ) Pub Date : 2020-11-01 , DOI: 10.1016/j.compgeo.2020.103770
Fabio Rollo , Angelo Amorosi

Abstract In this work the anisotropic model for clays SANICLAY proposed by Dafalias and Taiebat (2013) is reformulated within the framework of hyper-elastoplasticity. The model, called SANICLAY-T, is fully defined by two scalar potential functions, the free energy and the rate of dissipation. It is first presented in the triaxial space and then generalised in the multiaxial one. The model reproduces exactly the original one for the case of associate flow rule, while leads to a different outcome for non-associated flow. When compared to existing hyperplastic models accounting for rotational hardening, the proposed one proves to be more versatile, as characterised by less restrictive constraints on the hardening and asymptotic behaviour of the soil. The predictive capability of the model is illustrated with reference to experimental data on natural and reconstituted clays, highlighting its merits and limitations.

中文翻译:

SANICLAY-T:简单的基于热力学的粘土各向异性可塑性模型

摘要 在这项工作中,Dafalias 和 Taiebat (2013) 提出的粘土各向异性模型在超弹塑性框架内重新制定。该模型称为 SANICLAY-T,完全由两个标量势函数、自由能和耗散率定义。它首先在三轴空间中出现,然后在多轴空间中推广。该模型完全再现了关联流规则情况下的原始模型,而对于非关联流则导致不同的结果。与考虑旋转硬化的现有超塑性模型相比,所提出的模型被证明更通用,其特点是对土壤硬化和渐近行为的限制较少。
更新日期:2020-11-01
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