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A Coupled Dilation–Damage Microplane Model for Sands Subjected to Cyclic Principal Stress Rotation
https://orcid.org/http://orcid.org/0000-0002-0123-5480
This paper presents a new microplane model to predict both damage and multi-directional dilative behavior of anisotropic sand under cyclic principal stress axes rotation. Particular emphasis is given to the effect of intermediate principal stress parameter on the material response. Inherent anisotropy is considered by defining a directional elasticity modulus based on the fabric parameter. The evolution of material's anisotropic behavior is driven by the variation of planar damage parameters as functions of microplane strains. In calculating the directional dilation ratio, the variation of normal stress level, the shear strain range, and the abating effect of excessively repeated cycles are taken into account. The validation of the model against the experimental data reveals its capability to describe sand's behavior under cyclic pure stress PA rotation.
A Coupled Dilation–Damage Microplane Model for Sands Subjected to Cyclic Principal Stress Rotation
https://orcid.org/http://orcid.org/0000-0002-0123-5480
This paper presents a new microplane model to predict both damage and multi-directional dilative behavior of anisotropic sand under cyclic principal stress axes rotation. Particular emphasis is given to the effect of intermediate principal stress parameter on the material response. Inherent anisotropy is considered by defining a directional elasticity modulus based on the fabric parameter. The evolution of material's anisotropic behavior is driven by the variation of planar damage parameters as functions of microplane strains. In calculating the directional dilation ratio, the variation of normal stress level, the shear strain range, and the abating effect of excessively repeated cycles are taken into account. The validation of the model against the experimental data reveals its capability to describe sand's behavior under cyclic pure stress PA rotation.
A Coupled Dilation–Damage Microplane Model for Sands Subjected to Cyclic Principal Stress Rotation
https://orcid.org/http://orcid.org/0000-0002-0123-5480
This paper presents a new microplane model to predict both damage and multi-directional dilative behavior of anisotropic sand under cyclic principal stress axes rotation. Particular emphasis is given to the effect of intermediate principal stress parameter on the material response. Inherent anisotropy is considered by defining a directional elasticity modulus based on the fabric parameter. The evolution of material's anisotropic behavior is driven by the variation of planar damage parameters as functions of microplane strains. In calculating the directional dilation ratio, the variation of normal stress level, the shear strain range, and the abating effect of excessively repeated cycles are taken into account. The validation of the model against the experimental data reveals its capability to describe sand's behavior under cyclic pure stress PA rotation.
A Coupled Dilation–Damage Microplane Model for Sands Subjected to Cyclic Principal Stress Rotation
Iran J Sci Technol Trans Civ Eng
Shahrokhi, Sasan (author) / Barani, Omid Reza (author)
2021-09-01
19 pages
Article (Journal)
Electronic Resource
English
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