Browsing by Author "Manahiloh, Kalehiwot Nega"
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Item A Hyperelastic Bounding Surface Plasticity Model for Unsaturated Granular Soils(Geosciences, 2024-05-30) Kadivar, Mehdi; Manahiloh, Kalehiwot Nega; Kaliakin, Victor N.In this paper, a state-dependent, bounding surface plasticity model that simulates the behavior of unsaturated granular soils is presented. An unsaturated, soil mechanics-compatible elastoplastic response is adopted in which no part of the response occurs in a purely elastic fashion. To create an appropriate hydro-mechanical coupling, a newer generation stress framework, consisting of the Bishop-type effective stress and a second stress variable, is used in conjunction with a soil-water characteristic curve function. Details regarding the model development, parameter estimation, and assessment of the model’s predictive capabilities are outlined. With a single set of parameter values, the model realistically simulates the main features that characterize the shear and volumetric behavior of unsaturated granular soils over a wide range of matric suction, density, and net confining pressure.