A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A Bounding Surface Viscoplastic Constitutive Model for Unsaturated Soils
A viscoplastic constitutive model for describing the time-dependent stress-strain behaviour of unsaturated geomaterials is presented. The proposed model is formulated within the framework of viscoplastic consistency and the bounding surface plasticity model. The model provides a continuous transition from rate-independent plasticity to rate-dependent viscoplasticity. The hardening parameter representing the size of the bounding surface is defined as a function of viscoplastic strain, viscoplastic strain rate, and suction. The suction hardening effect is described using the coupled influence approach where suction has a multiplicative effect to the viscoplastic volumetric hardening. Numerical results are presented to demonstrate the capability of the proposed model in simulating the behaviour of saturated and unsaturated geomaterials.
A Bounding Surface Viscoplastic Constitutive Model for Unsaturated Soils
A viscoplastic constitutive model for describing the time-dependent stress-strain behaviour of unsaturated geomaterials is presented. The proposed model is formulated within the framework of viscoplastic consistency and the bounding surface plasticity model. The model provides a continuous transition from rate-independent plasticity to rate-dependent viscoplasticity. The hardening parameter representing the size of the bounding surface is defined as a function of viscoplastic strain, viscoplastic strain rate, and suction. The suction hardening effect is described using the coupled influence approach where suction has a multiplicative effect to the viscoplastic volumetric hardening. Numerical results are presented to demonstrate the capability of the proposed model in simulating the behaviour of saturated and unsaturated geomaterials.
A Bounding Surface Viscoplastic Constitutive Model for Unsaturated Soils
Mac, Thi Ngoc (author) / Shahbodagh, Babak (author) / Khalili, Nasser (author)
Sixth Biot Conference on Poromechanics ; 2017 ; Paris, France
Poromechanics VI ; 1045-1052
2017-07-06
Conference paper
Electronic Resource
English
A Bounding Surface Based Constitutive Model for Unsaturated Granular Soils
| British Library Conference Proceedings | 2019
A viscoplastic constitutive model for unsaturated geomaterials
| Elsevier | 2013