A constitutive model with microstructure evolution for flow of rate-independent granular materials

Jin Sun; Sankaran Sundaresan

doi:10.1017/jfm.2011.251

A constitutive model with microstructure evolution for flow of rate-independent granular materials

Jin Sun, Sankaran Sundaresan

Research output: Contribution to journal › Article › peer-review

135 Scopus citations

Abstract

A constitutive model is developed for the complex rheology of rate-independent granular materials. The closures for the pressure and the macroscopic friction coefficient are linked to microstructure through evolution equations for coordination number and fabric. The material constants in the model are functions of particle-level properties and are calibrated using data generated through simulations of steady and unsteady simple shear using the discrete element method (DEM). This model is verified against DEM simulations at complex loading conditions.

Original language	English (US)
Pages (from-to)	590-616
Number of pages	27
Journal	Journal of Fluid Mechanics
Volume	682
DOIs	https://doi.org/10.1017/jfm.2011.251
State	Published - Sep 10 2011

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Keywords

granular media
rheology

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10.1017/jfm.2011.251

Cite this

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title = "A constitutive model with microstructure evolution for flow of rate-independent granular materials",

abstract = "A constitutive model is developed for the complex rheology of rate-independent granular materials. The closures for the pressure and the macroscopic friction coefficient are linked to microstructure through evolution equations for coordination number and fabric. The material constants in the model are functions of particle-level properties and are calibrated using data generated through simulations of steady and unsteady simple shear using the discrete element method (DEM). This model is verified against DEM simulations at complex loading conditions.",

keywords = "granular media, rheology",

author = "Jin Sun and Sankaran Sundaresan",

note = "Funding Information: The authors are grateful to professors Joe Goddard, Prabhu Nott, Kesava Rao and Stefan Luding for their stimulating discussions on continuum modelling of dense granular materials. We appreciate the constructive and helpful comments from the reviewers. We also thank Sebastian Chialvo for generating part of the DEM data. This work was supported by a DOE-UCR grant DE-FG26-07NT43070.",

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doi = "10.1017/jfm.2011.251",

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AU - Sun, Jin

AU - Sundaresan, Sankaran

N1 - Funding Information: The authors are grateful to professors Joe Goddard, Prabhu Nott, Kesava Rao and Stefan Luding for their stimulating discussions on continuum modelling of dense granular materials. We appreciate the constructive and helpful comments from the reviewers. We also thank Sebastian Chialvo for generating part of the DEM data. This work was supported by a DOE-UCR grant DE-FG26-07NT43070.

PY - 2011/9/10

Y1 - 2011/9/10

N2 - A constitutive model is developed for the complex rheology of rate-independent granular materials. The closures for the pressure and the macroscopic friction coefficient are linked to microstructure through evolution equations for coordination number and fabric. The material constants in the model are functions of particle-level properties and are calibrated using data generated through simulations of steady and unsteady simple shear using the discrete element method (DEM). This model is verified against DEM simulations at complex loading conditions.

AB - A constitutive model is developed for the complex rheology of rate-independent granular materials. The closures for the pressure and the macroscopic friction coefficient are linked to microstructure through evolution equations for coordination number and fabric. The material constants in the model are functions of particle-level properties and are calibrated using data generated through simulations of steady and unsteady simple shear using the discrete element method (DEM). This model is verified against DEM simulations at complex loading conditions.

KW - granular media

KW - rheology

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JO - Journal of Fluid Mechanics

JF - Journal of Fluid Mechanics

ER -

A constitutive model with microstructure evolution for flow of rate-independent granular materials

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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