Collision Analysis of the Reversible Crankshaft Mechanism in a Convertible Refrigeration Compressor

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dc.contributor.authorCain, Jason Jamesen
dc.contributor.committeechairMitchiner, Reginald G.en
dc.contributor.committeememberWest, Robert L. Jr.en
dc.contributor.committeememberReinholtz, Charles F.en
dc.contributor.departmentMechanical Engineeringen
dc.date.accessioned2014-03-14T20:39:36Zen
dc.date.adate2000-07-07en
dc.date.available2014-03-14T20:39:36Zen
dc.date.issued2000-06-02en
dc.date.rdate2001-07-07en
dc.date.sdate2000-06-08en
dc.description.abstractThe purpose of this study is to analyze the behavior of a reversible two-cylinder refrigerant compressor manufactured by Bristol Compressor Incorporated. This compressor contains a specialized linkage that causes the compressor to transition from a two-cylinder compressor to a single-cylinder compressor when the direction of rotation of the crankshaft is reversed. The linkage accomplishes this by reducing the throw of one cylinder to zero. Of interest are the conditions to which this linkage is subjected when the direction of rotation is again reversed, causing the compressor to return to its two-cylinder functioning. When this reversal takes place, a collision occurs within the linkage. These repeated collisions are thought to be the cause of fatigue failure of the linkage in many of these compressors. To verify that this collision is the problem, an understanding of the stress state during the collision is needed. This thesis begins the work necessary to determine the dynamic stress state present within the system. A FORTRAN program was developed that modeled the kinematic behavior of the system under operating conditions. The program predicts the accelerations, velocities, positions, and internal forces present within the system during startup conditions. Also, a method has been developed to model rotary sliding contact between two cylindrical surfaces. This method is developed and investigated in hopes that it will facilitate the modeling of the behavior of the compressor linkage in a dynamic finite element analysis.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-06082000-21280047en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-06082000-21280047/en
dc.identifier.urihttp://hdl.handle.net/10919/33479en
dc.publisherVirginia Techen
dc.relation.haspartCAINthesis.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectrevolute contacten
dc.subjectreversible compressoren
dc.subjecttwo-stage compressoren
dc.titleCollision Analysis of the Reversible Crankshaft Mechanism in a Convertible Refrigeration Compressoren
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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