Rainbow gyroscopic disk metastructures for broadband vibration attenuation in rotors

Brandão, André Albuquerque Thomas e; Paula, Aline Souza de; Fabro, Adriano Todorovic

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Campo DC	Valor	Idioma
dc.contributor.author	Brandão, André Albuquerque Thomas e	-
dc.contributor.author	Paula, Aline Souza de	-
dc.contributor.author	Fabro, Adriano Todorovic	-
dc.date.accessioned	2025-03-10T22:46:41Z	-
dc.date.available	2025-03-10T22:46:41Z	-
dc.date.issued	2022-05-07	-
dc.identifier.citation	BRANDÃO, André A. T.; PAULA, Aline S. de; FABRO, Adriano T. Rainbow gyroscopic disk metastructures for broadband vibration attenuation in rotors. Journal of Sound and Vibration, v. 532, art. 116982, 18 ago. 2022. DOI 10.1016/j.jsv.2022.116982. Disponível em: https://www.sciencedirect.com/science/article/pii/S0022460X2200205X?via%3Dihub. Acesso em: 10 mar. 2025.	pt_BR
dc.identifier.uri	http://repositorio.unb.br/handle/10482/51805	-
dc.language.iso	eng	pt_BR
dc.publisher	Elsevier	pt_BR
dc.rights	Acesso Restrito	pt_BR
dc.title	Rainbow gyroscopic disk metastructures for broadband vibration attenuation in rotors	pt_BR
dc.type	Artigo	pt_BR
dc.subject.keyword	Rotordinâmica	pt_BR
dc.subject.keyword	Metamateriais	pt_BR
dc.subject.keyword	Arco-íris - metamateriais	pt_BR
dc.rights.license	© 2022 Elsevier Ltd. All rights reserved.	pt_BR
dc.identifier.doi	https://doi.org/10.1016/j.jsv.2022.116982	pt_BR
dc.relation.publisherversion	https://www.sciencedirect.com/science/article/pii/S0022460X2200205X?via%3Dihub	pt_BR
dc.description.abstract1	In the last decade, the study of metastructures has gained increasing attention and its engineering applications for vibration control have been gaining maturity for industrial applications. Remarkably, there is a gap on the application of the former approach for rotating machines yet to be bridged. In this work, we present an investigation on the use of locally resonant metastructures for vibration attenuation on rotating machines. A simple rotor structure with periodically attached, compliantly mounted disk resonators is modelled and its dynamical behaviour is investigated. Both forced harmonic response and modal analyses are explored and a thorough evaluation on the interactions between the resonators and main structure is presented for varying conditions of rotating speed and forward and backward excitations. Periodic and rainbow type of resonators with a gradient spatial profile are considered for translational and rotational resonators. It is shown that the former does not present any gyroscopic effect while the attenuation performance of latter depends on the interaction of the forward and backward resonating modes with the excitation. In addition, the rainbow disk metastructure presented attenuation bands up to 60% larger than the periodic case with the same added mass. The results suggest that the proposed gyroscopic periodic structures can be effectively applied for new alternatives for vibration attenuation in rotors paving the way for further innovative engineering solutions on vibration control in lightweight and high speed hermetic rotating machinery.	pt_BR
dc.identifier.orcid	https://orcid.org/0000-0003-4128-7717	pt_BR
dc.identifier.orcid	https://orcid.org/0000-0001-9910-5918	pt_BR
dc.identifier.orcid	https://orcid.org/0000-0003-1400-2755	pt_BR
dc.contributor.email	mailto:andrebrandao@petrobras.com.br	pt_BR
dc.contributor.email	mailto:alinedepaula@unb.br	pt_BR
dc.contributor.email	mailto:fabro@unb.br	pt_BR
dc.contributor.affiliation	Universidade de Brasília, Departamento de Engenharia Mecânica / PETROBRAS	pt_BR
dc.contributor.affiliation	Universidade de Brasília, Departamento de Engenharia Mecânica	pt_BR
dc.contributor.affiliation	Universidade de Brasília, Departamento de Engenharia Mecânica	pt_BR
dc.description.unidade	Faculdade de Tecnologia (FT)	pt_BR
dc.description.unidade	Departamento de Engenharia Mecânica (FT ENM)	pt_BR
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