Publicação:
Performance of a shock isolator inspired by skeletal muscles

dc.contributor.authorGatti, Gianluca
dc.contributor.authorLedezma-Ramirez, Diego F.
dc.contributor.authorBrennan, Michael J. [UNESP]
dc.contributor.institutionUniversity of Calabria
dc.contributor.institutionUniversidad Autónoma de Nuevo León
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2023-07-29T12:45:40Z
dc.date.available2023-07-29T12:45:40Z
dc.date.issued2023-04-15
dc.description.abstractNonlinear vibration isolators with low dynamic stiffness have advantages compared to linear isolators, but they also have limitations in terms of the maximum allowable displacement around a chosen equilibrium position. To overcome this issue, a novel nonlinear isolator is proposed that outperforms the classical quasi-zero stiffness nonlinear isolator when large inputs are applied. In this paper, the response of the isolator when subject to shock excitation is investigated. The isolator suspension is designed to exhibit a quasi-static force-deflection curve with sigmoidal shape, which has been observed in many studies reporting the characteristics of skeletal muscles. The shape of the force-deflection curve is such that the suspension system can store greater elastic potential energy. Simulations show that the proposed four-spring system outperforms the classical nonlinear three-spring configuration, in terms of maximum displacement of a suspended mass, when the shock amplitude is relatively large. This is achieved by exploiting the softening effect for large deformations.en
dc.description.affiliationDepartment of Mechanical Energy and Management Engineering University of Calabria, V. P. Bucci, 44C, CS
dc.description.affiliationFacultad de Ingeniería Mecánica y Eléctrica Universidad Autónoma de Nuevo León, León
dc.description.affiliationDepartment of Mechanical Engineering Faculty of Engineering UNESP
dc.description.affiliationUnespDepartment of Mechanical Engineering Faculty of Engineering UNESP
dc.identifierhttp://dx.doi.org/10.1016/j.ijmecsci.2022.108066
dc.identifier.citationInternational Journal of Mechanical Sciences, v. 244.
dc.identifier.doi10.1016/j.ijmecsci.2022.108066
dc.identifier.issn0020-7403
dc.identifier.scopus2-s2.0-85145773524
dc.identifier.urihttp://hdl.handle.net/11449/246609
dc.language.isoeng
dc.relation.ispartofInternational Journal of Mechanical Sciences
dc.sourceScopus
dc.subjectEnergy absorption
dc.subjectEnergy storage
dc.subjectNegative stiffness
dc.subjectQuasi-zero stiffness
dc.subjectShock isolator
dc.subjectVibration isolator
dc.titlePerformance of a shock isolator inspired by skeletal musclesen
dc.typeArtigo
dspace.entity.typePublication
unesp.author.orcid0000-0001-6390-8073[1]

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