ORCID Profile
0000-0002-0493-9619
Current Organisation
Delft University of Technology
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Publisher: Elsevier BV
Date: 12-2016
Publisher: Elsevier BV
Date: 06-2019
Publisher: Wiley
Date: 17-02-2020
DOI: 10.1002/AIC.16944
Publisher: Informa UK Limited
Date: 16-01-2018
Publisher: Springer Science and Business Media LLC
Date: 11-2018
DOI: 10.1140/EPJE/I2018-11744-2
Abstract: The dynamic crystallization of cubic granular particles under three-dimensional mechanical vibration is numerically investigated by the discrete element method. The effects of operational conditions (vibration, container shape and system size) and particle properties (gravity and friction) on the formation of crystals and defects are discussed. The results show that the formation and growth of clusters with face-to-face aligned cubic particles can be easily realized under vibrations. Especially, a single crystal with both translational and orientational ordering can be reproduced in a rectangular container under appropriate vibrations. It is also found that the gravitational effect is beneficial for the ordering of a packing the ordering of frictional particles can be improved significantly with an enlarged gravitational acceleration. The flat walls of a rectangular container facilitate the formation of orderly layered structures. The curved walls of a cylindrical container contribute to the formation of ring-like structures, whereas they also cause distortions and defects in the packing centers. Finally, it is shown that the crystallization of inelastic particles is basically accomplished by the pursuit of a better mechanical stability of the system, with decreasing kinetic and potential energies.
Publisher: Elsevier BV
Date: 08-2023
Publisher: American Chemical Society (ACS)
Date: 26-04-2017
Publisher: American Chemical Society (ACS)
Date: 05-03-2019
Publisher: Elsevier BV
Date: 07-2017
Publisher: Informa UK Limited
Date: 07-2014
Publisher: Elsevier BV
Date: 05-2021
Publisher: AIP Publishing
Date: 07-2018
DOI: 10.1063/1.5041976
Abstract: Bottom pressure of confined granular assemblies saturates at a certain value even this packing bed is being continuously charged. Corresponding formulation has been established to describe this interesting phenomenon. In this work, the influences of particle size and friction on the bottom stresses of granular matter were numerically investigated by discrete element method (DEM). It is found that the Janssen model can well predict the stress profile only when the size ratio of the container versus the particle is larger than 16. Moreover, a hydrostatic linear relation between apparent mass and filling mass can be obtained when the friction coefficient becomes insignificant (μ ≤ 0.01). To further interpret the Janssen effects, the granular assemblies are characterized and evaluated from the overall interactions with sidewalls, angular distribution function, void size distribution, coordination number, contact networks, contact orientation and distributions of contact forces within the packing structure. It is believed that these results will be helpful to comprehend the granular behaviors and may offer instructive reference to industrial processes in related fields.
Publisher: Elsevier BV
Date: 2018
Publisher: Elsevier BV
Date: 05-2021
Publisher: Elsevier BV
Date: 02-2018
Publisher: Elsevier BV
Date: 02-2020
Publisher: Elsevier BV
Date: 06-2017
Location: China
Start Date: 2022
End Date: 2024
Funder: European Commission
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