1000 resultados para Engenharia mecânica - Matemática
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Este estudo pretende mostrar algumas aplicações dos métodos computacionais na actividade de projecto em Engenharia Mecânica. Apresentam-se problemas concretos de engenharia que foram abordados durante um estágio realizado no CERN – Centre Européen pour la Recherche Nucléaire, e onde foram utilizados: a) o método dos elementos finitos para cálculo de temperaturas e fluxos de calor e a sua influência sobre os deslocamentos, tensões e deformações que ocorrem numa peça; b) o método híbrido dos elementos finitos/volumes finitos para a discretização das equações de Navier-Stokes e a análise do escoamento de fluidos; c) um algoritmo genético para a obtenção da solução óptima de um problema estrutural. O projecto em engenharia é uma actividade cada vez mais complexa, que requer o uso de ferramentas computacionais sofisticadas tais como os programas ANSYS e MATLAB que foram utilizados no estudo. A criação de modelos numéricos e a análise do seu comportamento com estas ferramentas requer simultaneamente um bom conhecimento dos princípios que estão na base do seu desenvolvimento e uma boa perícia na sua manipulação. Com elas é possível obter soluções quando os constrangimentos do projecto são exigentes e análises detalhadas do comportamento estrutural são necessárias. Neste estudo pretende-se também demonstrar que uma combinação inovadora destas ferramentas pode contribuir para obter aplicações úteis para a actividade de projecto em engenharia.
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Dissertação para obtenção do Grau de Mestre em Engenharia Mecânica
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This Master of Science Thesis deals with applying DEA (Data Envelopment Analysis) to the academic performance evaluation of graduate programs in Brazil, exploring it on a Mechanical and Production Engineering Program 2001-2003 data. The data used is that of the national assessment carried by CAPES, the governmental body in charge for graduate program assessment and certification. It is used the CCR output oriented DEA model, the CCR-Output with Assurance Region, and Window Analysis. The main findings are first that the CCR has the concerning problem of zero values of weights of outputs that is not appropriate in a sense that a graduate program has the higher efficiency score zeroing some output (e.g., number of academic papers published). Secondly, the Assurance Region method proved useful. Third, the Window Analysis also gave some light to the consistency of the performance in the time frame analysed. Also, the analysis results in the understanding that the Mechanics and Production Engineering should not be assessed jointly like currently applied by CAPES and rather should be assessed in its own field separately. Finally, the result of the DEA analysis showed some serious inconsistencies with the CAPES method. Graduate programs considered excellent has got low performance score and vice versa. This Thesis provides a strong argument in order to use DEA at least as a complimentary methodology for graduate program performance evaluation in Brazil
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This study aims to demonstrate the importance of computer-aided design and drafting (CADD) software for mechanical engineers. In addition, evaluate the software: Inventor 2015, Creo 3.0 and Solid Edge ST8, developed by consolidate companies in the market. In order to accomplish those goals, software application and its advantages will be demonstrated for the industry and for the academia. The evaluation process consists in modeling two mechanical assemblies, in order to compare functional aspects among the software. At the end, it is concluded that the learning of CADD software is of great importance also is the basis for using Computer-aided Engineering (CAE) and Computer-Aided Manufacturing (CAM) tools. Furthermore, it is suggested that Inventor and Solid Edge are more likely to be used in the academia
Resumo:
This study aims to demonstrate the importance of computer-aided design and drafting (CADD) software for mechanical engineers. In addition, evaluate the software: Inventor 2015, Creo 3.0 and Solid Edge ST8, developed by consolidate companies in the market. In order to accomplish those goals, software application and its advantages will be demonstrated for the industry and for the academia. The evaluation process consists in modeling two mechanical assemblies, in order to compare functional aspects among the software. At the end, it is concluded that the learning of CADD software is of great importance also is the basis for using Computer-aided Engineering (CAE) and Computer-Aided Manufacturing (CAM) tools. Furthermore, it is suggested that Inventor and Solid Edge are more likely to be used in the academia
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The present research sought to comprehend what is the development perspective of a collective work of educational robotics with high school students. The work started from the development activities Mathematics Sub Project of PIBID (Programa Institucional de Bolsa de Iniciação à Docência, Institutional Program of Initiation to Teaching Scholarship) in a school network from the state of Minas Gerais. The production process of data of this research was done through the follow up of high school students that participated in workshops robotics at the mentioned public school and were selected to continue the project at the Faculty of Mechanical Engineering in Federal University of Uberlândia (UFU). Subsequently, these students were involved in activities related to Robotics championships, elapsed through different spaces in public and private schools of basic education, University and Non-Governmental Organization. The data at the research were registered by photos, videos, field notes, documents produced by the participants and arising from internet like the social media Facebook, questionnaires and, mainly, interviews. At the analysis process of data the followed axes were constituted: Movement Learning Network with Robotics; The Different Roles at the Robotics Events and Experiences in Engineering and Technology. By this axes we understand what is the trajectory of the constitution process of a learning network in educational robotics that we find in expansion and consolidation. In this network the research participants performed different roles which left imprints responsible for their transformation. As a more evident imprint, we detected the robot construction and programming, which as for as they moved their studies forward, they developed the subject autonomy, collaboration, sharing and technological authorship.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Modelagem matemática para otimização de um potencial hidráulico utilizando turbinas Francis e Kaplan
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Pós-graduação em Engenharia Mecânica - FEG
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Dissertação Final de Mestrado para obtenção do grau de Mestre em Engenharia Mecânica no perfil de Manutenção e Produção
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Trabalho Final de Mestrado para obtenção do grau de Mestre em Engenharia Mecânica com especialização em Energia, Climatização e Refrigeração
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Trabalho Final de Mestrado para obtenção do grau de Mestre em Engenharia Mecânica com Especialização em Energia, Climatização e Refrigeração
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Trabalho Final de Mestrado para obtenção do grau de Mestre em Engenharia Mecânica com Especialização em Energia, Climatização e Refrigeração
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Dissertação apresentada à Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa para a obtenção do Grau de Mestre em Engenharia Mecânica