DC FieldValueLanguage
dc.contributorDepartment of Mechanical Engineering-
dc.creatorWong, WOen_US
dc.creatorWong, CNen_US
dc.date.accessioned2021-05-13T08:31:23Z-
dc.date.available2021-05-13T08:31:23Z-
dc.identifier.issn1048-9002en_US
dc.identifier.urihttp://hdl.handle.net/10397/89803-
dc.language.isoenen_US
dc.publisherAmerican Society of Mechanical Engineersen_US
dc.subjectAir damperen_US
dc.subjectCoulomb damping derivativeen_US
dc.subjectLinear slide block test platformen_US
dc.subjectMaxwell-VC-DVAen_US
dc.subjectOperation minimizationen_US
dc.subjectOptimal design curveen_US
dc.subjectVibration isolationen_US
dc.titleOptimal design of Maxwell-Viscous Coulomb air damper with a modified fixed point theoryen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage031002-1en_US
dc.identifier.epage031002-10en_US
dc.identifier.volume143en_US
dc.identifier.issue3en_US
dc.identifier.doi10.1115/1.4048388en_US
dcterms.abstractAir damper dynamic vibration absorber (DVA) is modeled using Maxwell transformed element and coulomb element. This damper serves to minimize vibration at resonant and operation of constant speed machine. Its stiffness and damping factor are transformed from Maxwell to Voigt arrangement. Meanwhile, viscous equivalent Coulomb damping is expressed by absolute relative motion. System transmissibility contours are plotted by min-max approach. Its optimal parameters are determined using this approach. Contour operation minimization is obtained from minimum system transmissibility. Moreover, exact solution of fixed points and optimal natural frequency ratio are obtained by a modified fixed point theory. Optimal design curve is derived by Coulomb damping derivative and maximum condition. Operational vibration level is minimized by 7% at the operation minimization using minimum condition. On the experimental side, test platform of the air damper is constructed using linear slide block system. Computational model of the air damper is established by its physical details and experimental data. Linear relationship is obtained between viscous and Coulomb damping angles. Modified fixed points are validated by frequency response function resonant peaks. Experimental vibration level is minimized by 5%, which being close to the minimization result. The model is validated within 5% accuracy by its optimal experimental curve.-
dcterms.bibliographicCitationJournal of vibration and acoustics, June 2021, v. 143, no. 3, 031002, 031002-1-031002-10en_US
dcterms.isPartOfJournal of vibration and acousticsen_US
dcterms.issued2021-06-
dc.identifier.scopus2-s2.0-85095965884-
dc.identifier.eissn1528-8927en_US
dc.identifier.artn031002en_US
dc.description.validate202105 bchy-
dc.identifier.FolderNumbera0827-n01-
dc.identifier.SubFormID1995-
dc.description.fundingSourceRGC-
dc.description.fundingTextGrant No. 15211215-
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