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
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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 -