The role of system dynamics on the behavior of elastomeric friction

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dc.contributor.authorDe Togni, Robert S.en
dc.contributor.committeechairEiss, Norman S. Jr.en
dc.contributor.committeememberHurst, Charles J.en
dc.contributor.committeememberLeonard, Robert G.en
dc.contributor.departmentMechanical Engineeringen
dc.date.accessioned2014-03-14T21:47:16Zen
dc.date.adate2009-10-10en
dc.date.available2014-03-14T21:47:16Zen
dc.date.issued1992-05-15en
dc.date.rdate2009-10-10en
dc.date.sdate2009-10-10en
dc.description.abstractFriction induced vibration of an epoxy coated shaft rotating in an elastomeric bushing is investigated. This study investigates the manner in which system dynamics and friction mechanisms are responsible for friction induced vibration and noise generation. A test method was developed to measure the friction torque and the system and acoustic response of the sliding system. Several materials including a fluorocarbon elastomer, a polydimethylsiloxane, and a natural rubber were tested. Three friction regimes were observed which were stick-slip oscillations, quasi-harmonic oscillations, and steady sliding. System stiffness and load were varied to observe changes in the critical velocities bounding each regime. System parameters were varied to determine sliding conditions leading to self-induced vibration, to establish how the character of vibration is affected, and to correlate friction torque with system and acoustic vibration for each elastomeric material. A two degree-of-freedom, lumped parameter model was developed to simulate the effect of system dynamics on the sliding behavior of the elastomeric bushing. The comparison of simulated and experimental response using analyses in the time and frequency domain indicate the predictive model provides an excellent representation of stick-slip behavior at various operating conditions.en
dc.description.degreeMaster of Scienceen
dc.format.extentxii, 148 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-10102009-020240en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-10102009-020240/en
dc.identifier.urihttp://hdl.handle.net/10919/45129en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1992.D486.pdfen
dc.relation.isformatofOCLC# 27408042en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1992.D486en
dc.subject.lcshFrictionen
dc.subject.lcshSystems engineeringen
dc.subject.lcshVibration -- Measurementen
dc.titleThe role of system dynamics on the behavior of elastomeric frictionen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineMechanical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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