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Large Force Range Mechanically Adjustable Dampers for Heavy Vehicle Applications

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dc.contributor.authorBurke, William Churchill Taliaferroen
dc.contributor.committeechairAhmadian, Mehdien
dc.contributor.committeememberTaheri, Saieden
dc.contributor.committeememberInman, Daniel J.en
dc.contributor.departmentMechanical Engineeringen
dc.date.accessioned2014-03-14T20:39:13Zen
dc.date.adate2010-07-08en
dc.date.available2014-03-14T20:39:13Zen
dc.date.issued2010-06-01en
dc.date.rdate2012-04-30en
dc.date.sdate2010-06-02en
dc.description.abstractSemi-active dampers utilizing various working principles have been developed for a variety of vehicles. These semi-active dampers have been designed to resolve the ride and handling compromise associated with conventional passive dampers, and increase vehicle stability. This thesis briefly reviews existing semi-active damper designs, including but not limited to MR dampers, before presenting two new prototype semi-active hydraulic dampers. Both prototype dampers are designed to provide a large force range while maintaining easily controllable valve characteristics. The first of these dampers served primarily as a proof of concept and a means of understanding the dynamics of a disc valve housed inside the main piston. The valve design is presented, along with other information concerning the fabrication of the Initial Prototype damper. Test results are presented and analyzed, and a second iteration of the valve is designed. The Final Prototype damper is a scaled up version of the initial design, with refinements made in piston geometry, internal disc profile, and dynamic seals. This large force range damper is tested and results are compared with existing MR dampers. The Final Prototype damper provides a significantly larger force range when compared with typical MR dampers. Finally, to conclude this research, the vehicle dynamics implications of the Final Prototype damper are discussed and recommendations for further study are made.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-06022010-182024en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-06022010-182024/en
dc.identifier.urihttp://hdl.handle.net/10919/33386en
dc.publisherVirginia Techen
dc.relation.haspartBurke_WCT_T_2010.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectelectro-hydraulic damperen
dc.subjectmechanically adjustable damperen
dc.subjectmagnetorheological damperen
dc.subjectheavy trucken
dc.titleLarge Force Range Mechanically Adjustable Dampers for Heavy Vehicle Applicationsen
dc.typeThesisen
thesis.degree.disciplineMechanical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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