Simulation and calibration of granules using the discrete element method |
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| Institution: | 1. Department of Natural and Territorial Sciences, University of Sassari, Via Piandanna 4, 07100 Sassari, Italy;2. Institute for the Technology of Nuclear and Other Mineral Raw Materials, Bulevar Franš d''Eperea 86, 11000 Belgrade, Serbia;3. Department of Chemistry and Pharmacy, University of Sassari, Via Muroni 23/a, 07100 Sassari, Italy;1. Department of Civil Engineering, Foshan University, Foshan, China;2. School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, China;3. Faculty of Civil Engineering, Vilnius Gediminas Technical University, Vilnius, Lithuania;4. Department of Civil Engineering, The University of Hong Kong, Hong Kong, China;1. Åbo Akademi University, Johan Gadolin Process Chemistry Centre, Henriksgatan 2, Turku/Åbo 20500, Finland;2. Institute of Biomedicine, University of Turku, Kiinamyllynkatu 10, Turku 20500, Finland;1. School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China;2. Department of Civil Engineering, Foshan University, Foshan 528000, China;3. School of Traffic and Environment, Shenzhen Institute of Information Technology, Shenzhen, China;4. Department of Mechanics and Civil Engineering, Jinan University, Guangzhou 510632, China;5. Department of Infrastructure Engineering, The University of Melbourne, Melbourne, VIC 3010, Australia |
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| Abstract: | The discrete element method (DEM), developed by Cundall and Strack (1979) to solve geomechanical problems, is used to simulate the mechanical behavior of granules. According to the DEM, an individual granule can be modeled as a realistic mechanical system consisting of primary particles bonded by interaction forces.Granulometric properties of the model material, zeolite 4A, have been measured to determine their macro properties. To investigate the compression behavior, a compression test was performed using a strength tester on single granules between two pistons. A modeled granule consisting of more than 22,000 primary particles was generated. The micro properties of the modeled granule have been precisely set to allow its macro properties to be equivalent to the macro properties of zeolite 4A granules. To calibrate the mechanical properties, diametrical compression was simulated using two rigid walls stressed at a constant stressing velocity. The force–displacement curve of the modeled granule at compression has been calibrated by the experimental curve of zeolite 4A. |
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| Keywords: | Discrete element method Material behavior Granulation |
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