{"id":2699,"date":"2015-09-28T11:26:58","date_gmt":"2015-09-28T14:26:58","guid":{"rendered":"http:\/\/laship.ufsc.br\/site\/?p=2699"},"modified":"2016-07-16T15:53:12","modified_gmt":"2016-07-16T18:53:12","slug":"2015-analise-teorico-experimental-de-prensa-dobradeira-hidraulica-controlada-por-bomba-motor-com-velocidade-variavel","status":"publish","type":"post","link":"http:\/\/laship.ufsc.br\/site\/en\/2015-analise-teorico-experimental-de-prensa-dobradeira-hidraulica-controlada-por-bomba-motor-com-velocidade-variavel\/","title":{"rendered":"2015 \u2013 Theoretical-experimental analysis on a hydraulic press brake controlled by variable-speed pump-motor"},"content":{"rendered":"<strong>Candidate:<\/strong> Paulo Leonel Teixeira <a href=\"\/site\/wp-content\/uploads\/2016\/01\/Disserta\u00e7\u00e3o_Teixeira_2015.pdf\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-2714\" src=\"\/site\/wp-content\/uploads\/2016\/06\/pdf-download.png\" alt=\"Disserta\u00e7\u00e3o_Teixeira_2015\" width=\"80\" height=\"80\" \/><\/a><\/p>\n<p><strong>Program:<\/strong> UFSC \/ POSMEC<\/p>\n<p><strong>Date:<\/strong> September, 2015<\/p>\n<p><strong>Advisor:<\/strong> Victor Juliano De Negri<\/p>\n<p><strong>Co-advisor:<\/strong> Anders Petter Krus (Flumes\u00a0\/\u00a0LiU)<\/p>\n<p><strong>Abstract:<\/strong> The continuous increase in worldwide demand for the rational use of energy resources has spurred the pursuit for more efficient systems. Machine manufacturers are therefore gradually replacing the resistive control in hydraulic systems for conservative control. An option of conservative control is the use of pumps driven by electric motors with the capacity to vary its speed, known as variable-speed pumps. In this context, this work features the theoretical and experimental analysis of a new synchronized hydraulic press brake. The hydraulic cylinders of the studied machine are controlled by servomotors that drive the primary hydraulic units. These units perform both pumping and motoring functions along the machine operation cycle and are hence named as pump-motor. The critical operating conditions were identified by analysis based on experimental results. A model of the press brake hydraulic system has been developed and implemented in the numerical simulation software known as Hopsan. Subsequently validation, the model was employed to propose two circuit modifications and to evaluate the increase in the dynamic and static performance. The main benefits of the new circuits are the mitigation of hydraulic shocks and appropriate pressure level for the pump-motor suction line and thus avoiding cavitation. The machine performance is hence enhanced with few changes in the circuit. The study was conducted by combining efforts between the machine manufacturer, Sorg Ind. e Com. de M\u00e1quinas, the hydraulic systems supplier, Argo-Hytos AT Fluid Power Systems Ltda., and the university, by means of LASHIP \u2013 Laboratory of Hydraulic and Pneumatic Systems \u2013 of Federal University of Santa Catarina.<\/p>\n<p><strong>Keywords: <\/strong>Press brake. Variable-speed pump. Pump control.<\/p>\n<p><strong>Reference:<\/strong> TEIXEIRA, P. L. <strong>An\u00e1lise te\u00f3rico experimental de prensa dobradeira hidr\u00e1ulica controlada por bomba-motor com velocidade vari\u00e1vel.<\/strong> 2015. 154 p. Disserta\u00e7\u00e3o (Mestrado em Engenharia Mec\u00e2nica). Universidade Federal de Santa Catarina, Florian\u00f3polis.)<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2704\" src=\"http:\/\/laship.ufsc.br\/site\/wp-content\/uploads\/2016\/01\/Disserta\u00e7\u00e3o_Teixeira_2015_Imagem.png\" alt=\"Disserta\u00e7\u00e3o_Teixeira_2015_Imagem\" width=\"1000\" height=\"450\" srcset=\"http:\/\/laship.ufsc.br\/site\/wp-content\/uploads\/2016\/01\/Disserta\u00e7\u00e3o_Teixeira_2015_Imagem.png 1000w, http:\/\/laship.ufsc.br\/site\/wp-content\/uploads\/2016\/01\/Disserta\u00e7\u00e3o_Teixeira_2015_Imagem-800x360.png 800w, http:\/\/laship.ufsc.br\/site\/wp-content\/uploads\/2016\/01\/Disserta\u00e7\u00e3o_Teixeira_2015_Imagem-768x346.png 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/>","protected":false},"excerpt":{"rendered":"<p><strong>Candidate:<\/strong> Paulo Leonel Teixeira<br \/>\n<strong>Program:<\/strong> UFSC \/ POSMEC<br \/>\n<strong>Date:<\/strong> September, 2015<br \/>\n<strong>Advisor:<\/strong> Victor Juliano De Negri<br \/>\n<strong>Co-advisor:<\/strong> Anders Petter Krus (Flumes\u00a0\/\u00a0LiU)<\/p>\n","protected":false},"author":1,"featured_media":2704,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[],"class_list":["post-2699","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dissertacoes"],"_links":{"self":[{"href":"http:\/\/laship.ufsc.br\/site\/en\/wp-json\/wp\/v2\/posts\/2699"}],"collection":[{"href":"http:\/\/laship.ufsc.br\/site\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/laship.ufsc.br\/site\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/laship.ufsc.br\/site\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/laship.ufsc.br\/site\/en\/wp-json\/wp\/v2\/comments?post=2699"}],"version-history":[{"count":11,"href":"http:\/\/laship.ufsc.br\/site\/en\/wp-json\/wp\/v2\/posts\/2699\/revisions"}],"predecessor-version":[{"id":3087,"href":"http:\/\/laship.ufsc.br\/site\/en\/wp-json\/wp\/v2\/posts\/2699\/revisions\/3087"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/laship.ufsc.br\/site\/en\/wp-json\/wp\/v2\/media\/2704"}],"wp:attachment":[{"href":"http:\/\/laship.ufsc.br\/site\/en\/wp-json\/wp\/v2\/media?parent=2699"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/laship.ufsc.br\/site\/en\/wp-json\/wp\/v2\/categories?post=2699"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/laship.ufsc.br\/site\/en\/wp-json\/wp\/v2\/tags?post=2699"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}