Skip navigation
Please use this identifier to cite or link to this item: http://repositorio.unb.br/handle/10482/45178
Files in This Item:
There are no files associated with this item.
Title: Experimental and numerical investigation of the compression and expansion of a granular bed of repelling magnetic disks
Authors: Modesto, J. A. C.
Dorbolo, S.
Katsuragi, Hiroaki
Pacheco‑Vázquez, Felipe
Sobral, Yuri Dumaresq
metadata.dc.contributor.email: mailto:fpacheco@ifuap.buap.mx
mailto:ydsobral@unb.br
metadata.dc.identifier.orcid: https://orcid.org/0000-0003-4436-7966
https://orcid.org/0000-0001-5775-1292
Assunto:: Partículas magnéticas
Amortecedor
Compressão
ODS 9 - Indústria, inovação e infraestrutura
Issue Date: 5-Sep-2022
Publisher: Springer
Citation: MODESTO, J. A. C. et. al. Experimental and numerical investigation of the compression and expansion of a granular bed of repelling magnetic disks. Granular Matter, v. 24, art. 105, 2022. DOI 10.1007/s10035-022-01268-w. Disponível em: https://link.springer.com/article/10.1007/s10035-022-01268-w. Acesso em: 16 nov. 2022.
Abstract: We studied experimentally and numerically the compaction and subsequent expansion dynamics of a granular bed composed of cylindrical repelling magnets contained in a two-dimensional cell. The particles are firstly compressed vertically with a piston at a given strain rate until a maximum force is reached. The piston is then removed at the same strain rate while the bed expands due to the magnetic repulsion of the particles. In the experiments, two different initial configurations were generated, a standard and a loose packing bed. The standard packing bed was simulated, and modelling the dry friction between the magnetic particles and the walls of the cell was crucial for the correct description of the compression and expansion dynamics. We found that the force acting on the piston increases continuously and exponentially with the piston stroke during compression, being very sensitive to the initial packing conditions of the bed. In contrast, a history-independent exponential decrease of this force was found during the expansion phase. The hysteresis in the system was quantified in terms of the average displacement of the particles. The continuous compression contrasts with the sudden force drops observed during the compaction of granular materials with direct particle-particle contacts, where stick-slip motion is induced by friction and force chain breakage. Moreover, we found that the short range of magnetic interaction induces density inversion and crystallization of the system. Our results can be useful to develop a new kind of magnetic granular dampers.
DOI: https://doi.org/10.1007/s10035-022-01268-w
metadata.dc.relation.publisherversion: https://link.springer.com/article/10.1007/s10035-022-01268-w
Appears in Collections:Artigos publicados em periódicos e afins

Show full item record " class="statisticsLink btn btn-primary" href="/jspui/handle/10482/45178/statistics">



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.