{"id":{"repo_id":"brazil-uerj","oai_identifier":"oai:pantheon.ufrj.br:11422/3403"},"canonical_url":"https://search.dev.ndltd.org/etd/brazil-uerj/oai:pantheon.ufrj.br:11422/3403","repository":{"repo_id":"brazil-uerj","name":"Brazil UERJ","base_url":"https://pantheon.ufrj.br/oai/request"},"display":{"title":"Investigação na aplicação da teoria de vibração ao teste dinâmico de máquinas-ferramentas","abstract":"The main purpose of this work was to investigate the dynamic stability of a national centre lathe. The degree of stability to above referred rnachine tool was determined in two different ways. Firstly, the cutting tests were done on predetermined workpieces to obtain a chart of stability between the lirnit width of cut and the superficial velocity of the workpiece. Maintaining the transverse feed constant and varying sucessively the rotation of the spindle. The second part was measuring the response of the rnachine to excitation by an electrodynarnic vibrator, utilizing automatic equipment. Finally one compared the graphs of dynamic stability obtained experimentally and, theoretically, by considering three distinct aspects of the the theory of stability using the respective cornputer programrnes.","abstract_html":"The main purpose of this work was to investigate the dynamic stability of a national centre lathe. The degree of stability to above referred rnachine tool was determined in two different ways. Firstly, the cutting tests were done on predetermined workpieces to obtain a chart of stability between the lirnit width of cut and the superficial velocity of the workpiece. Maintaining the transverse feed constant and varying sucessively the rotation of the spindle. The second part was measuring the response of the rnachine to excitation by an electrodynarnic vibrator, utilizing automatic equipment. Finally one compared the graphs of dynamic stability obtained experimentally and, theoretically, by considering three distinct aspects of the the theory of stability using the respective cornputer programrnes.","abstract_has_math":false,"creators":["Abi-Zaid, José Antônio Saadi"],"institution":"Universidade Federal do Rio de Janeiro","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Evans, Michel C."],"committee_chairs":[],"committee_members":[],"year":1972,"date_issued":"1972-11","date_published":"1972-11","updated_at":"2026-07-24T01:16:01Z","subjects":["Vibrações de maquinas"],"languages":["por"],"rights":["Acesso Aberto"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/11422/3403","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Evans, Michel C."]},{"key":"dc:creator","label":"Author","values":["Abi-Zaid, José Antônio Saadi"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2018-01-05T17:45:05Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2026-05-16T03:04:24Z"]},{"key":"dc:date.issued","label":"Date","values":["1972-11"]},{"key":"dc:publisher","label":"Institution","values":["Universidade Federal do Rio de Janeiro"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia"]},{"key":"dc:type","label":"Dc Type","values":["Dissertação"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Vibrações de maquinas"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["por"]},{"key":"dc:rights","label":"Dc Rights","values":["Acesso Aberto"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/11422/3403"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The main purpose of this work was to investigate the dynamic stability of a national centre lathe. The degree of stability to above referred rnachine tool was determined in two different ways. Firstly, the cutting tests were done on predetermined workpieces to obtain a chart of stability between the lirnit width of cut and the superficial velocity of the workpiece. Maintaining the transverse feed constant and varying sucessively the rotation of the spindle. The second part was measuring the response of the rnachine to excitation by an electrodynarnic vibrator, utilizing automatic equipment. Finally one compared the graphs of dynamic stability obtained experimentally and, theoretically, by considering three distinct aspects of the the theory of stability using the respective cornputer programrnes."]},{"key":"dc:title","label":"Title","values":["Investigação na aplicação da teoria de vibração ao teste dinâmico de máquinas-ferramentas"]}]}],"canonical_facts":{"dc:contributor.advisor":["Evans, Michel C."],"dc:creator":["Abi-Zaid, José Antônio Saadi"],"dc:date.accessioned":["2018-01-05T17:45:05Z"],"dc:date.available":["2026-05-16T03:04:24Z"],"dc:date.issued":["1972-11"],"dc:description.abstract":["The main purpose of this work was to investigate the dynamic stability of a national centre lathe. The degree of stability to above referred rnachine tool was determined in two different ways. Firstly, the cutting tests were done on predetermined workpieces to obtain a chart of stability between the lirnit width of cut and the superficial velocity of the workpiece. Maintaining the transverse feed constant and varying sucessively the rotation of the spindle. The second part was measuring the response of the rnachine to excitation by an electrodynarnic vibrator, utilizing automatic equipment. Finally one compared the graphs of dynamic stability obtained experimentally and, theoretically, by considering three distinct aspects of the the theory of stability using the respective cornputer programrnes."],"dc:identifier.uri":["http://hdl.handle.net/11422/3403"],"dc:language":["por"],"dc:publisher":["Universidade Federal do Rio de Janeiro"],"dc:publisher.department":["Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia"],"dc:rights":["Acesso Aberto"],"dc:subject":["Vibrações de maquinas"],"dc:title":["Investigação na aplicação da teoria de vibração ao teste dinâmico de máquinas-ferramentas"],"dc:type":["Dissertação"]},"updated_at":"2026-07-24T01:16:01Z"}