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Effects of Wall Inclinations and Wall Imperfections on Pressures during Granular Flow in Silos
The effects of wall inclinations and wall imperfections at the onset of granular flow in a silo are numerically studied. The calculations were carried out for the onset of quasi-static mass flow in a silo with a controlled outlet velocity along the entire bottom. In the analysis, a finite element method and a polar hypoplastic constitutive law were used. A polar hypoplastic law describes the salient properties of granular bodies. FE calculations were performed with a plane strain silo with parallel walls, slightly convergent walls, slightly divergent walls, and parallel and convergent walls. The influence of a wall imperfection directed inwards and a wall imperfection directed outwards in a silo with parallel walls was also analysed. The FE results showed a large sensitivity of stresses in bulk solids due to the change of the direction of shear deformation along the silo wall.
Effects of Wall Inclinations and Wall Imperfections on Pressures during Granular Flow in Silos
The effects of wall inclinations and wall imperfections at the onset of granular flow in a silo are numerically studied. The calculations were carried out for the onset of quasi-static mass flow in a silo with a controlled outlet velocity along the entire bottom. In the analysis, a finite element method and a polar hypoplastic constitutive law were used. A polar hypoplastic law describes the salient properties of granular bodies. FE calculations were performed with a plane strain silo with parallel walls, slightly convergent walls, slightly divergent walls, and parallel and convergent walls. The influence of a wall imperfection directed inwards and a wall imperfection directed outwards in a silo with parallel walls was also analysed. The FE results showed a large sensitivity of stresses in bulk solids due to the change of the direction of shear deformation along the silo wall.
Effects of Wall Inclinations and Wall Imperfections on Pressures during Granular Flow in Silos
Jacek Tejchman (author)
2014
Article (Journal)
Electronic Resource
Unknown
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Effects of Wall Inclinations and Wall Imperfections on Pressures during Granular Flow in Silos
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