Experimental and numerical investigation of the compression and expansion of a granular bed of repelling magnetic disks

Modesto, J. A. C.; Dorbolo, S.; Katsuragi, Hiroaki; Pacheco‑Vázquez, Felipe; Sobral, Yuri Dumaresq

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Campo DC	Valor	Lengua/Idioma
dc.contributor.author	Modesto, J. A. C.	-
dc.contributor.author	Dorbolo, S.	-
dc.contributor.author	Katsuragi, Hiroaki	-
dc.contributor.author	Pacheco‑Vázquez, Felipe	-
dc.contributor.author	Sobral, Yuri Dumaresq	-
dc.date.accessioned	2022-11-16T18:35:39Z	-
dc.date.available	2022-11-16T18:35:39Z	-
dc.date.issued	2022-09-05	-
dc.identifier.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.	pt_BR
dc.identifier.uri	https://repositorio.unb.br/handle/10482/45178	-
dc.language.iso	Inglês	pt_BR
dc.publisher	Springer	pt_BR
dc.rights	Acesso Restrito	pt_BR
dc.title	Experimental and numerical investigation of the compression and expansion of a granular bed of repelling magnetic disks	pt_BR
dc.type	Artigo	pt_BR
dc.subject.keyword	Partículas magnéticas	pt_BR
dc.subject.keyword	Amortecedor	pt_BR
dc.subject.keyword	Compressão	pt_BR
dc.subject.keyword	ODS 9 - Indústria, inovação e infraestrutura	pt_BR
dc.identifier.doi	https://doi.org/10.1007/s10035-022-01268-w	pt_BR
dc.relation.publisherversion	https://link.springer.com/article/10.1007/s10035-022-01268-w	pt_BR
dc.description.abstract1	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.	pt_BR
dc.identifier.orcid	https://orcid.org/0000-0003-4436-7966	pt_BR
dc.identifier.orcid	https://orcid.org/0000-0001-5775-1292	pt_BR
dc.contributor.email	mailto:fpacheco@ifuap.buap.mx	pt_BR
dc.contributor.email	mailto:ydsobral@unb.br	pt_BR
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