Performance of a shock isolator inspired by skeletal muscles
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.ijmecsci.2022.108066 http://hdl.handle.net/11449/246609 |
Resumo: | Nonlinear 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. |
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Repositório Institucional da UNESP |
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Performance of a shock isolator inspired by skeletal musclesEnergy absorptionEnergy storageNegative stiffnessQuasi-zero stiffnessShock isolatorVibration isolatorNonlinear 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.Department of Mechanical Energy and Management Engineering University of Calabria, V. P. Bucci, 44C, CSFacultad de Ingeniería Mecánica y Eléctrica Universidad Autónoma de Nuevo León, LeónDepartment of Mechanical Engineering Faculty of Engineering UNESPDepartment of Mechanical Engineering Faculty of Engineering UNESPUniversity of CalabriaUniversidad Autónoma de Nuevo LeónUniversidade Estadual Paulista (UNESP)Gatti, GianlucaLedezma-Ramirez, Diego F.Brennan, Michael J. [UNESP]2023-07-29T12:45:40Z2023-07-29T12:45:40Z2023-04-15info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.ijmecsci.2022.108066International Journal of Mechanical Sciences, v. 244.0020-7403http://hdl.handle.net/11449/24660910.1016/j.ijmecsci.2022.1080662-s2.0-85145773524Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengInternational Journal of Mechanical Sciencesinfo:eu-repo/semantics/openAccess2023-07-29T12:45:40Zoai:repositorio.unesp.br:11449/246609Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:48:31.259979Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Performance of a shock isolator inspired by skeletal muscles |
title |
Performance of a shock isolator inspired by skeletal muscles |
spellingShingle |
Performance of a shock isolator inspired by skeletal muscles Gatti, Gianluca Energy absorption Energy storage Negative stiffness Quasi-zero stiffness Shock isolator Vibration isolator |
title_short |
Performance of a shock isolator inspired by skeletal muscles |
title_full |
Performance of a shock isolator inspired by skeletal muscles |
title_fullStr |
Performance of a shock isolator inspired by skeletal muscles |
title_full_unstemmed |
Performance of a shock isolator inspired by skeletal muscles |
title_sort |
Performance of a shock isolator inspired by skeletal muscles |
author |
Gatti, Gianluca |
author_facet |
Gatti, Gianluca Ledezma-Ramirez, Diego F. Brennan, Michael J. [UNESP] |
author_role |
author |
author2 |
Ledezma-Ramirez, Diego F. Brennan, Michael J. [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
University of Calabria Universidad Autónoma de Nuevo León Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Gatti, Gianluca Ledezma-Ramirez, Diego F. Brennan, Michael J. [UNESP] |
dc.subject.por.fl_str_mv |
Energy absorption Energy storage Negative stiffness Quasi-zero stiffness Shock isolator Vibration isolator |
topic |
Energy absorption Energy storage Negative stiffness Quasi-zero stiffness Shock isolator Vibration isolator |
description |
Nonlinear 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. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-07-29T12:45:40Z 2023-07-29T12:45:40Z 2023-04-15 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.ijmecsci.2022.108066 International Journal of Mechanical Sciences, v. 244. 0020-7403 http://hdl.handle.net/11449/246609 10.1016/j.ijmecsci.2022.108066 2-s2.0-85145773524 |
url |
http://dx.doi.org/10.1016/j.ijmecsci.2022.108066 http://hdl.handle.net/11449/246609 |
identifier_str_mv |
International Journal of Mechanical Sciences, v. 244. 0020-7403 10.1016/j.ijmecsci.2022.108066 2-s2.0-85145773524 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
International Journal of Mechanical Sciences |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129463920099328 |