### Abstract

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).

Original language | English (US) |
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Title of host publication | IUTAM-ISIMM Symposium on Mathematical Modeling and Physical Instances of Granular Flows |

Pages | 280-289 |

Number of pages | 10 |

DOIs | |

State | Published - Jul 21 2010 |

Event | Joint IUTAM-ISIMM Symposium on Mathematical Modeling and Physical Instances of Granular Flows - Reggio Calabria, Italy Duration: Sep 14 2009 → Sep 18 2009 |

### Publication series

Name | AIP Conference Proceedings |
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Volume | 1227 |

ISSN (Print) | 0094-243X |

ISSN (Electronic) | 1551-7616 |

### Other

Other | Joint IUTAM-ISIMM Symposium on Mathematical Modeling and Physical Instances of Granular Flows |
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Country | Italy |

City | Reggio Calabria |

Period | 9/14/09 → 9/18/09 |

### All Science Journal Classification (ASJC) codes

- Physics and Astronomy(all)

### Keywords

- Constitutive modeling
- Dense granular flows
- Discrete element method

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## Cite this

Sun, J., & Sundaresan, S. (2010). A plasticity model with microstructure evolution for quasi-static granular flows. In

*IUTAM-ISIMM Symposium on Mathematical Modeling and Physical Instances of Granular Flows*(pp. 280-289). (AIP Conference Proceedings; Vol. 1227). https://doi.org/10.1063/1.3435398