Please use this identifier to cite or link to this item: https://hdl.handle.net/10216/97956
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dc.creatorC. Moutinho
dc.creatorA. Cunha
dc.creatorE. Caetano
dc.date.accessioned2019-01-31T21:58:16Z-
dc.date.available2019-01-31T21:58:16Z-
dc.date.issued2011
dc.identifier.issn1738-1584
dc.identifier.othersigarra:62575
dc.identifier.urihttps://repositorio-aberto.up.pt/handle/10216/97956-
dc.description.abstractThis article describes the research work involving the implementation of an Active Bracing System aimed at the modification of the initial dynamics of a laboratorial building structure to a new desired dynamics. By means of an adequate control force it is possible to assign an entirely new dynamics to a system by moving its natural frequencies and damping ratios to different values with the purpose of achieving a better overall structural response to external loads. In Civil Engineering applications, the most common procedures for controlling vibrations in structures include changing natural frequencies in order to avoid resonance phenomena and increasing the damping ratios of the critical vibration modes. In this study, the actual implementation of an active system is demonstrated, which is able to perform such modifications in a wide frequency range; to this end, a plane frame physical model with 4 degrees-of-freedom is used. The Active Bracing System developed is actuated by a linear motor controlled by an algorithm based on pole assignment strategy. The efficiency of this control system is verified experimentally by analyzing the control effect obtained with the modification of the initial dynamic parameters of the plane frame and observing the subsequent structural response.
dc.language.isoeng
dc.rightsrestrictedAccess
dc.subjectEngenharia estrutural, Engenharia civil
dc.subjectStructural engineering, Civil engineering
dc.titleDirect assignment of the dynamics of a laboratorial model using an active bracing system
dc.typeArtigo em Revista Científica Internacional
dc.contributor.uportoFaculdade de Engenharia
dc.identifier.doi10.12989/sss.2011.8.2.205
dc.identifier.authenticusP-002-P3W
dc.subject.fosCiências da engenharia e tecnologias::Engenharia civil
dc.subject.fosEngineering and technology::Civil engineering
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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