Mestrado em Modelagem e Otimização - PPGMO

URI Permanente para esta coleção

https://repositorio.ufcat.edu.br/handle/tede/40
O Mestrado em Modelagem e Otimização tem um papel essencial no desenvolvimento de novas tecnologias. Atualmente, se faz muito intensamente o uso de modelos matemáticos, simulações avançadas e sofisticados desenvolvimentos computacionais na pesquisa científica em geral.

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Navegando Mestrado em Modelagem e Otimização - PPGMO por Assunto "Additive manufacturing"

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    Estudo e caracterização de componentes confeccionados por manufatura aditiva
    (Universidade Federal de Goiás, 2018-04-02) Rezende, Stéfany Mayara Ferreira de; Stoppa, Marcelo Henrique; http://lattes.cnpq.br/1532505326645535; Pituba, José Júlio de Cerqueira; Santee, Donald Mark
    There are several techniques used for the manufacture of three-dimensional models, but due to their ease of use, material extrusion has been widely applied in specific areas, since such as engineering as personal use. Such factors indicate that in the coming years many of the everyday plastic products commonly produced by conventional methods will be replaced by home printed objects in order to minimize costs and customization. Thus, knowing the influence of the process parameters is fundamental for the good performance of the products made by this technology. Thus, this work is dedicated to the study of the mechanical properties of parts constructed by material extrusion and the influence of parameters of the material and the printing process on the final characteristics of the produced object. A brief review of the literature is carried out in order to know the mechanical properties already identified and which methods are most used. It has been identified that the mechanical properties of the printed pieces are significantly affected by the printing orientation and airgap parameters. An experimental approach is used, aiming to evaluate the influence of parameters, shape and fill percentage, on the mechanical strength of the made objects. In addition, an initial and introductory study was carried out in order to analyze the functional characteristics of a prosthesis made by additive manufacture. The accomplishment of the same, aims to identify the limitations of the device and to provide future improvements.
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    Modelagem e desenvolvimento de prótese de mão mecatrônica com acionamento individual de dedos
    (Universidade Federal de Goiás, 2017-04-03) Ferreira Neto, Guilherme; Stoppa, Marcelo Henrique; http://lattes.cnpq.br/1532505326645535; Stoppa, Marcelo Henrique; Vera, Ivânia; Rabelo, Marcos Napoleão
    Among the parts of the body, the hand is one of the most important for the humans because of their versatility and ability to manipulate objects. Many people do not have this member, either congenital malformation or necessity of amputation which make their day by day hardy. The existing comercial prosthesis have high costs making it inusual for a signifcative part of patients, on the other hand, there are at Internet communities to develop more accessible hand prostheses, for manufacturing by 3D printing but, It generally use unefficient activation methods. The target of this study is to develop the mechanical structure of a prosthesis hand with individual drive for each fingers, which can be make by using 3D printing, making it the most accessible price and the most efficient prosthesis when compared with current ones. For this, a mathematical model that describes the motion of the robotic finger will be determined. This finger has as actuator, DC motors, coupled to gears which in by their self are coupled in arms. The results will be checked by comparing the movements performed bettewen a prototype of the prosthesis and the determined mathematical model. It is expected that the prosthesis proposed by this research is the structural base for future stages of the development of a full prosthesis activated by voice command.