Active vibration control of composite structures

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dc.contributor.authorChang, Min-Yungen
dc.contributor.committeechairLibrescu, Liviuen
dc.contributor.committeememberCramer, Mark S.en
dc.contributor.committeememberFrederick, Danielen
dc.contributor.committeememberMeirovitch, Leonarden
dc.contributor.committeememberPlaut, Raymond H.en
dc.contributor.departmentEngineering Mechanicsen
dc.date.accessioned2014-03-14T21:18:56Zen
dc.date.adate2005-09-16en
dc.date.available2014-03-14T21:18:56Zen
dc.date.issued1990-07-07en
dc.date.rdate2005-09-16en
dc.date.sdate2005-09-16en
dc.description.abstractThe vibration control of composite beams and plates subjected to a travelling load is studied in this dissertation. By comparing the controlled as well as uncontrolled responses of classical and refined structural models, the influence of several important composite structure properties which are not included in the classical structural model is revealed. The modal control approach is employed to suppress the structural vibration. In modal control, the control is effected by controlling the modes of the system. The control law is obtained by using the optimal control theory. Comparison of two variants of the modal control approach, the coupled modal control (CMC) and independent modal-space control (IMSC), is made. The results are found to be in agreement with those obtained by previous investigators. The differences between the controlled responses as well as actuator outputs that are predicted by the classical and the refined structural models are outlined in this work. In conclusion, it is found that, when performing the structural analysis and control system design for a composite structure, the classical structural models (such as the Euler-Bernoulli beam and Kirchhoff plate) yield erroneous conclusions concerning the performance of the actual structural system. Furthermore, transverse shear deformation, anisotropy, damping, and the parameters associated with the travelling load are shown to have great influence on the controlled as well as uncontrolled responses of the composite structure.en
dc.description.degreePh. D.en
dc.format.extentvii, 282 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-09162005-115021en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-09162005-115021/en
dc.identifier.urihttp://hdl.handle.net/10919/39364en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V856_1990.C533.pdfen
dc.relation.isformatofOCLC# 22673641en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V856 1990.C533en
dc.subject.lcshComposite construction -- Design -- Mathematical modelsen
dc.subject.lcshStructural dynamics -- Mathematical modelsen
dc.subject.lcshVibration -- Mathematical modelsen
dc.titleActive vibration control of composite structuresen
dc.typeDissertationen
dc.type.dcmitypeTexten
thesis.degree.disciplineEngineering Mechanicsen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

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