Manipulating flexural waves to enhance the broadband vibration mitigation through inducing programmed disorder on smart rainbow metamaterials

Moura, Braion Barbosa de; Machado, Marcela Rodrigues; Dey, Sudeep; Mukhopadhyay, Tanmoy

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Campo DC	Valor	Idioma
dc.contributor.author	Moura, Braion Barbosa de	-
dc.contributor.author	Machado, Marcela Rodrigues	-
dc.contributor.author	Dey, Sudeep	-
dc.contributor.author	Mukhopadhyay, Tanmoy	-
dc.date.accessioned	2025-02-17T20:54:54Z	-
dc.date.available	2025-02-17T20:54:54Z	-
dc.date.issued	2023-10-14	-
dc.identifier.citation	MOURA, B. B. de et al. Manipulating flexural waves to enhance the broadband vibration mitigation through inducing programmed disorder on smart rainbow metamaterials. Applied Mathematical Modelling, v. 125, pt. B, p. 650-671, jan. 2024. DOI 10.1016/j.apm.2023.10.011. Disponível em: https://www.sciencedirect.com/science/article/pii/S0307904X23004523?via%3Dihub. Acesso em: 17 fev. 2025.	pt_BR
dc.identifier.uri	http://repositorio.unb.br/handle/10482/51622	-
dc.language.iso	eng	pt_BR
dc.publisher	Elsevier	pt_BR
dc.rights	Acesso Restrito	pt_BR
dc.title	Manipulating flexural waves to enhance the broadband vibration mitigation through inducing programmed disorder on smart rainbow metamaterials	pt_BR
dc.type	Artigo	pt_BR
dc.subject.keyword	Metamateriais	pt_BR
dc.subject.keyword	Método do elemento espectral	pt_BR
dc.subject.keyword	Ondas (Física)	pt_BR
dc.rights.license	Elsevier	pt_BR
dc.identifier.doi	https://doi.org/10.1016/j.apm.2023.10.011	pt_BR
dc.relation.publisherversion	https://www.sciencedirect.com/science/article/pii/S0307904X23004523?via%3Dihub	pt_BR
dc.description.abstract1	The application of smart materials and metastructures has been rapidly increasing in advanced multiphysical systems because of their ability to modify mechanical responses by adding circuits in a programmable way. This paper proposes to exploit functional gradation and programmed disorder for flexural wave manipulation to enhance broadband vibration control, leading to a new application of smart metamaterials. The graded metamaterial configuration involves arranging the shunted piezoelectric patches with algorithmically obtained spatially varying parameters, resulting in wideband wave attenuation and mode trapping. The considered locally grading parameter here is the shunt resonant frequency of the unit cells, designed following the rainbow trap idea and referred to as ‘rainbow’ metamaterials. Two metastructures are developed in this article by tuning the shunted piezoelectric electrical circuit in single and multiple configurations, each related to the unit cell. The computationally efficient spectral element method is employed to calculate the dynamic response, and the spectral transfer matrix method is integrated therein to obtain the dispersive diagram. Subsequently, effective vibration mitigation in a wider frequency band is realized through wave manipulation based on the concept of rainbow metamaterials. To this end, we have considered a unimorph beam hosting an array of piezoelectric unit cells with single and multiple resonant shunts for obtaining the numerical results, which demonstrate that the vibration attenuation zone of the multi-resonant rainbow arrangement becomes significantly wider than the single shunt configuration. The programmed disorder in the elastic waves imposes the veering effect, which generates an interaction between two dispersion curves showing a coupling phenomenon for the waves. It involves relevant energetic exchanges between the wave modes and strongly affect the undamped forced response of the system that can influence the wave trapping generated by the proposed metamaterial. Such outcomes lead to the realization of the benefit of rainbow smart metastructures compared to conventional locally resonant metamaterials on vibration and elastic bandwidth manipulation.	pt_BR
dc.identifier.orcid	https://orcid.org/0000-0003-0314-730X	pt_BR
dc.identifier.orcid	https://orcid.org/0000-0002-7488-7201	pt_BR
dc.identifier.orcid	https://orcid.org/0000-0002-0778-6515	pt_BR
dc.contributor.email	mailto:marcelam@unb.br	pt_BR
dc.contributor.affiliation	Universidade de Brasília	pt_BR
dc.contributor.affiliation	Universidade de Brasília	pt_BR
dc.contributor.affiliation	Department of Mechanical Engineering, National Institute of Technology Silchar, Silchar, India	pt_BR
dc.contributor.affiliation	Faculty of Engineering and Physical Sciences, University of Southampton, Southampton, UK	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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