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Abstract
The paper focuses on confined silo flow of cohesionless sand. The problem considered is a quasi-static flow in a plane strain model silo with parallel walls simulated with the material point method (MPM). The simulation used a non-local hypoplastic constitutive model. Initially, the paper validated the implemented numerical approach with basic element tests and a plane strain compression test. The subsequent MPM calculations for a model silo were performed with different initial void ratios of sand and silo wall roughness. The flow simulations took also into account the different both location and width of the outlet. The emphasis was on the evolution of both shear zones (wall and internal curvilinear shear zones) and their impact on wall stresses/forces during flow. The numerical findings enhance the understanding of shear localization in granular materials during confined controlled flow in silos and its immense effect on the magnitude and distribution of wall pressures.
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Authors (4)
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Wojciech Sołowski Associate professor
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- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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POWDER TECHNOLOGY
no. 378,
pages 538 - 560,
ISSN: 0032-5910 - Language:
- English
- Publication year:
- 2021
- Bibliographic description:
- Krzyżanowski J., Tejchman-Konarzewski A., Sołowski W., Wójcik M.: Modelling of shear zones during quasi-static granular silo flow using material point method (MPM)// POWDER TECHNOLOGY -Vol. 378,iss. Part A (2021), s.538-560
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.powtec.2020.10.001
- Verified by:
- Gdańsk University of Technology
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