Vibration of lightweight composite structures with random irregularities

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aut.researcherChung, Hyuck
aut.target-audienceDepartment of Mathematics, University of Otago
aut.venueDepartment of Mathematics, University of Otago
aut.venue-locationDunedin NZ
dc.contributor.authorChung, H
dc.date.accessioned2011-11-08T00:17:27Z
dc.date.accessioned2011-11-08T00:17:43Z
dc.date.available2011-11-08T00:17:27Z
dc.date.available2011-11-08T00:17:43Z
dc.date.copyright2009-07-16
dc.date.issued2009-07-16
dc.description.abstractExact determination of the vibration of a composite structure becomes impossible beyond the low-frequency range due to uncertainties in the structure. Therefore, the prediction model in the mid- to high-frequency range must include the effects of the irregularities. I will show how the power spectral density of an irregularity in a component can be included in the model. A lightweight floor/ceiling system is used as an example. Effects of twisting joists or varying stiffness of the floor show up as a simple summation in the original forward operator. Understanding random irregularities in composite structures have become important, because any manufacturing process introduces randomness, and traditional modelling techniques such as the finite element method or statistical energy analysis have not been very successful.
dc.format.extent50 min
dc.identifier.citationPresentation at the Departmental seminar of the Mathematics and Statistics Department, University of Otago, Dunedin, New Zealand
dc.identifier.urihttps://hdl.handle.net/10292/2482
dc.publisherUniversity of Otago
dc.relation.replaceshttp://hdl.handle.net/10292/2481
dc.relation.replaces10292/2481
dc.relation.urihttp://www.maths.otago.ac.nz/home/department/seminars/archives.php?page=15
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in (see Citation). The original publication is available at (see Publisher's Version)
dc.rights.accessrightsOpenAccess
dc.titleVibration of lightweight composite structures with random irregularities
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pubs.organisational-data/AUT/Design & Creative Technologies/School of Computing & Mathematical Science
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pubs.organisational-data/AUT/PBRF Researchers/Design & Creative Technologies PBRF Researchers
pubs.organisational-data/AUT/PBRF Researchers/Design & Creative Technologies PBRF Researchers/DCT C & M Mathematical Science
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