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dc.contributor.authorPonton, Charles B.en_US
dc.date.accessioned2014-03-14T20:31:56Z
dc.date.available2014-03-14T20:31:56Z
dc.date.issued2007-02-05en_US
dc.identifier.otheretd-02192007-102421en_US
dc.identifier.urihttp://hdl.handle.net/10919/31279
dc.description.abstractLittle research has been done to determine the stress states developed in an industrial sawblade for various operating conditions. The stresses are developed from the forces generated during the cutting of materials, and also from the vibration of the sawblade. The difficulty of analyzing these stresses and vibrations results from the sawbladeâ s high speed of rotation, which make it difficult to instrument the sawblade for analysis. Stress and vibration can ruin the sawblade from loss of material properties due to heat build-up and fatigue failure. The sawblade industry raised natural frequencies away from the operating frequencies to overcome the vibrations. To raise the natural frequencies of the sawblades away from the operating frequencies, residual stresses have been intentionally induced in the sawbody. The residual stresses come from plastically deforming the sawbody with one or more concentric rings. Experts who determine the location, depth, and number of residual stress rings are called â saw doctorsâ . This thesis quantifies the residual stresses induced by saw doctors. Developing and evaluating finite element models of an industrial sawblade while undergoing the effects from rotating and cutting are also included in the thesis. In addition, the effects on the sawblades performance due to various numbers and lengths of expansion slots and sawblade tensioning are explored. Models of the sawblade are plastically deformed leaving residual stresses which are analyzed to determine the natural frequencies of the sawblade. The thesis quantifies the above mechanisms for a sawblade under the loads developed from rotation and a load case representing the cutting process. The work developed in this thesis is a first step toward characterizing the effects of specific mechanisms which can be used to design better, longer lasting sawblades.en_US
dc.publisherVirginia Techen_US
dc.relation.haspartPermission.pdfen_US
dc.relation.haspartThesis_ponton8.pdfen_US
dc.rightsI hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to Virginia Tech or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.en_US
dc.subjectResidualen_US
dc.subjectSaw Doctoringen_US
dc.subjectCircular Sawen_US
dc.subjectSaw Tensioningen_US
dc.titleFinite Element Analysis of Industrial Circular Sawblade With Respect to Tensioning, Rotating, Cutting, and Expansion Slotsen_US
dc.typeThesisen_US
dc.contributor.departmentMechanical Engineeringen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineMechanical Engineeringen_US
dc.contributor.committeechairWest, Robert L. Jr.en_US
dc.contributor.committeememberDuma, Stefan M.en_US
dc.contributor.committeememberReinholtz, Charles F.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-02192007-102421/en_US
dc.date.sdate2007-02-19en_US
dc.date.rdate2007-04-13
dc.date.adate2007-04-13en_US


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