Abstract
Micro Model of Grain Shearing During Silo Discharge
Highlights
Silo is usually used for the storage of granular material such as grain, cements, sand et al The mechanism of lateral wall pressure during silo discharge is still a challenge
Micro and marco parameters: The triaxial test was conducted at the confining pressure of 100 kPa
The triaxial test simulations were made with 1000 particles and a porosity of 0.40
Summary
Silo is usually used for the storage of granular material such as grain, cements, sand et al The mechanism of lateral wall pressure during silo discharge is still a challenge. The shear character during silo discharge is very similar to the triaxial tests used for soils. It is well-known that the stored granular material will shear during discharge by theory and test evidence. Many researchers studied the silo discharge using finite element method to study the key problem of lateral pressure. DEM can capture particle behavior at the microscopic scale better than FEM method especially for silo discharge (Chen and Liang, 2008; Vidal et al, 2006; Haussler and Eibl, 1984; Więckowski, 2000). The 3D DEM modeling provides a realistic stress state (Lu and Frost, 2010; Zhao et al, 2011)
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