{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/84018"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/84018","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"A Mechanistic Force Model and Stability Analysis for Contour Turning","abstract":"The stability variations in axial contour turning are investigated via a frequency domain analysis. Three-dimensional stability-limit diagrams, third dimension being the toolpath, are generated for machining a workpiece with concave-convex contours. The reasons for the stability variations along the toolpath are analyzed in terms of the overlap factor (amount of regeneration) and the cutting stiffness variations. A mechanistic model based force-feedback scheme for disturbance rejection and tracking control in radial contour turning is proposed. The stability issues for the force-feedback design are addressed and the relative tracking performance of acceleration and force feedback controllers at various levels of process parameters (depth of cut, feedrate, etc.) are analyzed.","abstract_html":"The stability variations in axial contour turning are investigated via a frequency domain analysis. Three-dimensional stability-limit diagrams, third dimension being the toolpath, are generated for machining a workpiece with concave-convex contours. The reasons for the stability variations along the toolpath are analyzed in terms of the overlap factor (amount of regeneration) and the cutting stiffness variations. A mechanistic model based force-feedback scheme for disturbance rejection and tracking control in radial contour turning is proposed. The stability issues for the force-feedback design are addressed and the relative tracking performance of acceleration and force feedback controllers at various levels of process parameters (depth of cut, feedrate, etc.) are analyzed.","abstract_has_math":false,"creators":["Reddy, Rohit Gajjela"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Mechanical Engineering","degree_department":null,"school":null,"contributors":["Kapoor, Shiv G.","DeVor, Richard E."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2001,"date_issued":"2001","date_published":"2001","updated_at":"2026-07-22T22:26:22Z","subjects":["Engineering, Industrial"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(MiAaPQ)AAI9996676"],"render_values":[{"text":"(MiAaPQ)AAI9996676","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/84018","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Kapoor, Shiv G.","DeVor, Richard E."]},{"key":"dc:creator","label":"Author","values":["Reddy, Rohit Gajjela"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2001","2015-09-25T21:13:11Z","10000-01-01"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Mechanical Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Engineering, Industrial"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/84018","(MiAaPQ)AAI9996676"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["The stability variations in axial contour turning are investigated via a frequency domain analysis. 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Three-dimensional stability-limit diagrams, third dimension being the toolpath, are generated for machining a workpiece with concave-convex contours. The reasons for the stability variations along the toolpath are analyzed in terms of the overlap factor (amount of regeneration) and the cutting stiffness variations. A mechanistic model based force-feedback scheme for disturbance rejection and tracking control in radial contour turning is proposed. The stability issues for the force-feedback design are addressed and the relative tracking performance of acceleration and force feedback controllers at various levels of process parameters (depth of cut, feedrate, etc.) are analyzed.","Made available in DSpace on 2015-09-25T21:13:11Z (GMT). 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