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DC Field | Value | Language |
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dc.contributor.author | Barros, Everaldo de | - |
dc.contributor.author | Mathias, Mauro Hugo | - |
dc.date.accessioned | 2014-05-27T11:21:40Z | - |
dc.date.accessioned | 2016-10-25T18:21:20Z | - |
dc.date.available | 2014-05-27T11:21:40Z | - |
dc.date.available | 2016-10-25T18:21:20Z | - |
dc.date.issued | 2005-12-01 | - |
dc.identifier | http://business.highbeam.com/437750/article-1G1-152997220/contribution-nonlinear-structural-dynamics-characterization | - |
dc.identifier.citation | International Congress on Noise Control Engineering 2005, INTERNOISE 2005, v. 3, p. 1950-1959. | - |
dc.identifier.uri | http://hdl.handle.net/11449/68501 | - |
dc.identifier.uri | http://acervodigital.unesp.br/handle/11449/68501 | - |
dc.description.abstract | Successful experiments in nonlinear vibrations have been carried out with cantilever beams under harmonic base excitation. A flexible slender cantilever has been chosen as a convenient structure to exhibit modal interactions, subharmonic, superharmonic and chaotic motions, and others interesting nonlinear phenomena. The tools employed to analyze the dynamics of the beam generally include frequency- and force-response curves. To produce force-response curves, one keeps the excitation frequency constant and slowly varies the excitation amplitude, on the other hand, to produce frequency-response curves, one keeps the excitation amplitude fixed and slowly varies the excitation frequency. However, keeping the excitation amplitude constant while varying the excitation frequency is a difficult task with an open-loop measurement system. In this paper, it is proposed a closed-loop monitor vibration system available with the electromagnetic shaker in order to keep the harmonic base excitation amplitude constant. This experimental setup constitutes a significant improvement to produce frequency-response curves and the advantages of this setup are evaluated in a case study. The beam is excited with a periodic base motion transverse to the axis of the beam near the third natural frequency. Modal interactions and two-period quasi-periodic motion are observed involving the first and the third modes. Frequency-response curves, phase space and Poincaré map are used to characterize the dynamics of the beam. | en |
dc.format.extent | 1950-1959 | - |
dc.language.iso | eng | - |
dc.source | Scopus | - |
dc.subject | Base excitation | - |
dc.subject | Base motion | - |
dc.subject | Chaotic motions | - |
dc.subject | Closed-loop | - |
dc.subject | Electromagnetic shakers | - |
dc.subject | Excitation amplitudes | - |
dc.subject | Excitation frequency | - |
dc.subject | Frequency-response curves | - |
dc.subject | Measurement system | - |
dc.subject | Modal interactions | - |
dc.subject | Non-linear phenomena | - |
dc.subject | Non-linear vibrations | - |
dc.subject | Nonlinear structural dynamics | - |
dc.subject | Phase spaces | - |
dc.subject | Poincare | - |
dc.subject | Quasi-periodic motion | - |
dc.subject | Subharmonics | - |
dc.subject | Super-harmonic | - |
dc.subject | Vibration systems | - |
dc.subject | Dynamics | - |
dc.subject | Phase space methods | - |
dc.subject | Structural dynamics | - |
dc.subject | Cantilever beams | - |
dc.title | A contribution for nonlinear structural dynamics characterization of cantilever beams | en |
dc.type | outro | - |
dc.contributor.institution | Instituto de Aeronáutica e Espaço (IAE) | - |
dc.contributor.institution | Universidade Estadual Paulista (UNESP) | - |
dc.description.affiliation | Centro Técnico Aeroespacial Instituto de Aeronáutica e Espaço Divisão de Integração e Ensaios, Praça Eduardo Gomes, 50, 12.228-904 São José dos Campos, SP | - |
dc.description.affiliation | UNESP - Universidade Estadual Paulista Faculdade de Engenharia Departamento de Mecânica, C.P. 205, 12.516-410 Guaratinguetá, SP | - |
dc.description.affiliationUnesp | UNESP - Universidade Estadual Paulista Faculdade de Engenharia Departamento de Mecânica, C.P. 205, 12.516-410 Guaratinguetá, SP | - |
dc.rights.accessRights | Acesso restrito | - |
dc.relation.ispartof | International Congress on Noise Control Engineering 2005, INTERNOISE 2005 | - |
dc.identifier.scopus | 2-s2.0-84873860219 | - |
Appears in Collections: | Artigos, TCCs, Teses e Dissertações da Unesp |
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