Kinematics of beam flexure four-bar linkages with applications in a compound bow

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dc.contributor.authorPalmer, Matthewen
dc.contributor.committeechairReinholtz, Charles F.en
dc.contributor.committeememberMitchiner, Reginald G.en
dc.contributor.committeememberTidwell, Paul H.en
dc.contributor.departmentMechanical Engineeringen
dc.date.accessioned2014-03-14T21:48:43Zen
dc.date.adate2008-11-01en
dc.date.available2014-03-14T21:48:43Zen
dc.date.issued1996en
dc.date.rdate2008-11-01en
dc.date.sdate2008-11-01en
dc.description.abstractThis thesis is a study in the application of kinematics coupled with elastic body mechanics. Most studies in kinematics assume all mechanism links to be inelastic. Furthermore, the methods of kinematic synthesis have generally been developed to meet requirements of displacement, velocity and acceleration. The work presented in this thesis differs in two important aspects. First, one grounded link of a four-bar linkage is replaced by a cantilevered beam in flexure to produce a force generating mechanism. Second, the synthesis method presented here allows the generation of these mechanisms in closed form for prescribed force generation. A compound archery bow that incorporates four-bar linkages has been developed as an example. This design relies on the non-linear mechanical advantage of the four-bar linkage and the bow mechanics to provide a resistance curve that is more compatible with the human strength curve. In addition, by modifying the bow kinematics, more potential energy can be stored, and thus potentially more kinetic energy can be transferred to the arrow than with previous bows.en
dc.description.degreeMaster of Scienceen
dc.format.extentviii, 80 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-11012008-063505en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-11012008-063505/en
dc.identifier.urihttp://hdl.handle.net/10919/45410en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1996.P356.pdfen
dc.relation.isformatofOCLC# 36222548en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectkinematicsen
dc.subjectfour-bar linkagesen
dc.subjectsynthesisen
dc.subjectarcheryen
dc.subjectcompound bowsen
dc.subjectbowsen
dc.subjectbeamsen
dc.subject.lccLD5655.V855 1996.P356en
dc.titleKinematics of beam flexure four-bar linkages with applications in a compound bowen
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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