TY - GEN

T1 - A plasticity model with microstructure evolution for quasi-static granular flows

AU - Sun, Jin

AU - Sundaresan, Sankaran

PY - 2010

Y1 - 2010

N2 - We develop a plasticity model to predict complex rheological behaviors of quasi-static granular flows. The stress is decomposed to a pressure term and a deviatoric term with a macroscopic friction coefficient. The closures to the pressure and the friction coefficient are linked to the microstructure evolution, which is modeled by the coordination number and fabric evolution equations. The material constants in the model are functions of particle-level properties and are calibrated using the data from simulations of steady and unsteady simple shear using the discrete element method (DEM).

AB - We develop a plasticity model to predict complex rheological behaviors of quasi-static granular flows. The stress is decomposed to a pressure term and a deviatoric term with a macroscopic friction coefficient. The closures to the pressure and the friction coefficient are linked to the microstructure evolution, which is modeled by the coordination number and fabric evolution equations. The material constants in the model are functions of particle-level properties and are calibrated using the data from simulations of steady and unsteady simple shear using the discrete element method (DEM).

KW - Constitutive modeling

KW - Dense granular flows

KW - Discrete element method

UR - http://www.scopus.com/inward/record.url?scp=77954633905&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77954633905&partnerID=8YFLogxK

U2 - 10.1063/1.3435398

DO - 10.1063/1.3435398

M3 - Conference contribution

AN - SCOPUS:77954633905

SN - 9780735407725

T3 - AIP Conference Proceedings

SP - 280

EP - 289

BT - IUTAM-ISIMM Symposium on Mathematical Modeling and Physical Instances of Granular Flows

T2 - Joint IUTAM-ISIMM Symposium on Mathematical Modeling and Physical Instances of Granular Flows

Y2 - 14 September 2009 through 18 September 2009

ER -