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Optimal dynamic control of laminated adaptive structures using a higher order model and a genetic algorithm

2005Journal article Open access
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dc.contributor.authorMoita, José Mateus Simõespt_PT
dc.contributor.authorMartins, Pedro G.pt_PT
dc.contributor.authorSoares, Cristovão M. Motapt_PT
dc.contributor.authorSoares, Carlos A. Motapt_PT
dc.date.accessioned2009-02-13T17:09:39Z
dc.date.available2009-02-13T17:09:39Z
dc.date.issued2005
dc.description.abstractThis paper deals with a finite element formulation based on the classical laminated plate theory, for active control of thin plate laminated structures with integrated piezoelectric layers, acting as sensors and actuators. The control is initialized through a previous optimization of the core of the laminated structure, in order to minimize the vibration amplitude. Also the optimization of the patches position is performed to maximize the piezoelectric actuator efficiency. The genetic algorithm is used for these purposes. The finite element model is a single layer triangular plate/shell element with 24 degrees of freedom for the generalized displacements, and one electrical potential degree of freedom for each piezoelectric element layer, which can be surface bonded or embedded on the laminate. To achieve a mechanism of active control of the structure dynamic response, a feedback control algorithm is used, coupling the sensor and active piezoelectric layers. To calculate the dynamic response of the laminated structures the Newmark method is considered. The model is applied in the solution of an illustrative case and the results are presented and discussed.pt_PT
dc.identifier.citation2º. ECCOMAS Thematic Conference on Smart Structures and Materials. - Lisbon, 18-21 July 2005. - 17 ppt_PT
dc.identifier.urihttp://hdl.handle.net/10400.1/114
dc.language.isoengpt_PT
dc.publisherLisbonpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/2.0en
dc.subjectSensorespt_PT
dc.subjectElementos finitospt_PT
dc.subjectActuadorespt_PT
dc.subject620pt_PT
dc.subjectActive controlpt_PT
dc.subjectSensors and actuatorspt_PT
dc.subjectAdaptive structurespt_PT
dc.subjectOptimizationpt_PT
dc.titleOptimal dynamic control of laminated adaptive structures using a higher order model and a genetic algorithmpt_PT
dc.typejournal article
dspace.entity.typePublication
rcaap.rightsopenAccess
rcaap.typearticlept_PT

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