Design Optimization for AM of MECSE CubeSat’s Mechanical System
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Tipo de documento: | Dissertação |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.6/8865 |
Resumo: | Magnetohydrodynamics/Electrohydronamics CubeSat Experiment (MECSE) is an under development CubeSat at University of Beira Interior (UBI), in a collaboration effort between C-MAST (Center for Mechanical and Aerospace Science and Technologies) and CEiiA (Centre of Engineering and Product Development). MECSE’s mission is to validate the theory that an electromagnetic field can re-shape the layer of plasma allowing communication during atmosferic re-entry of vehicles, avoiding out the Radio Frequency (RF) blackout. Currently MECSE presents a classic structure composed by one top and one end plate, connected by to side frames, connected itself by six ribs. All this structural elements are made of aluminium 7075. The goal of this masters dissertation is to develop a new structure by means of topology optimization with the goal of being produced by additive manufacturing, ensuring the structural integrity of the CubeSat and all of its components in its interior, vital to the sucess of the mission. The adopted approach to reach this new stucture started by the creation of an aluminium shell structure with the dimensions of the MECSE. Mass points were applied in the Center of Gravity (CG) of which systems an attached to the structure with rigid connectors. Constraints and loads were applied according to the requirements defined by the MECSE’s launch provider as well as the topology optimization’s objectives. The optimized structures obtained were then analyzed in order to validate the optimization process and the new structure. A ligther structure was achieved, with a mass saving of 115g. Attachements for all the components inside were defined as weel as an methodology for the assembly of the CubeSat. This final optimized geometry was reanalyzed and was concluded that a new assembly methodology must be developed since the proposed fragilize the stucture by reducing its first natural frequency for less than the requirements. |
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Design Optimization for AM of MECSE CubeSat’s Mechanical SystemCubesatFabricação AditivaMecseOtimização TopológicaDomínio/Área Científica::Engenharia e Tecnologia::Engenharia AeronáuticaMagnetohydrodynamics/Electrohydronamics CubeSat Experiment (MECSE) is an under development CubeSat at University of Beira Interior (UBI), in a collaboration effort between C-MAST (Center for Mechanical and Aerospace Science and Technologies) and CEiiA (Centre of Engineering and Product Development). MECSE’s mission is to validate the theory that an electromagnetic field can re-shape the layer of plasma allowing communication during atmosferic re-entry of vehicles, avoiding out the Radio Frequency (RF) blackout. Currently MECSE presents a classic structure composed by one top and one end plate, connected by to side frames, connected itself by six ribs. All this structural elements are made of aluminium 7075. The goal of this masters dissertation is to develop a new structure by means of topology optimization with the goal of being produced by additive manufacturing, ensuring the structural integrity of the CubeSat and all of its components in its interior, vital to the sucess of the mission. The adopted approach to reach this new stucture started by the creation of an aluminium shell structure with the dimensions of the MECSE. Mass points were applied in the Center of Gravity (CG) of which systems an attached to the structure with rigid connectors. Constraints and loads were applied according to the requirements defined by the MECSE’s launch provider as well as the topology optimization’s objectives. The optimized structures obtained were then analyzed in order to validate the optimization process and the new structure. A ligther structure was achieved, with a mass saving of 115g. Attachements for all the components inside were defined as weel as an methodology for the assembly of the CubeSat. This final optimized geometry was reanalyzed and was concluded that a new assembly methodology must be developed since the proposed fragilize the stucture by reducing its first natural frequency for less than the requirements.Magnetohydrodynamics/Electrohydronamics CubeSat Experiment (MECSE) é um CubeSat em desenvolvimento na Universidade da Beira Interior, resultante da colaboração do C-MAST (Centro de Ciências e Tecnologia Mecânica e Aeroespacial) e o CEiiA (Centro de Engenharia e Desenvolvimento de Produto). A missão do MECSE é validar a teoria de que um campo eletromagnético permite diminuir a espessura da camada de plasma, permitindo a realização de comunicações durante a reentrada de veículos na atmosfera terrestre, evitando a fase de blackout. O MECSE apresenta atualmente uma estrutura clássica, constituída por um painel superior e inferior, conectados por duas armações laterais, conectadas entre si por seis frisos. Todos os componentes estruturais são feitos de alumínio 7075. Esta dissertação de mestrado tem por objetivo o desenvolvimento de uma nova estrutura com recurso a otimização topológica para ser produzida através de Fabricação Aditiva, garantindo a integridade estrutural do CubeSat e de todos os sistemas no seu interior, vitais para a realização da missão proposta. A abordagem adotada para a obtenção desta nova estrutura começou pela criação de uma casca de alumínio com as dimensões do MECSE. Pontos de massa foram colocados no Centro de Gravidade (CG) de cada sistema e fixos à estrutura através de ligações rígidas. Foram aplicados os constrangimentos e as cargas à estrutura de acordo com as normas definidas pelo fabricante do lançador do MECSE bem como os objetivos para otimização topológica e corridas as análises. As estruturas otimizadas resultantes das análises realizadas foram posteriormente analisadas estaticamente de modo a validar o processo de otimização. Com este trabalho, foi obtida uma estrutura mais leve com uma redução de massa de 115g. As fixações dos componentes dentro da estrutura foram desenhados bem como uma metodologia para a montagem e desmontagem do CubeSat. A estrutura final otimizada foi reanalisada e foi concluído que uma nova metodologia de montagem deverá ser reestudada, uma vez que esta reduziu a frequência natural para um valor abaixo do imposto pelas normas.Gamboa, Pedro VieiraMachado, Miguel SousauBibliorumEsteves, Miguel Costa Gonçalves2020-01-28T17:06:54Z2018-11-222018-10-082018-11-22T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10400.6/8865TID:202361705enginfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-12-15T09:49:14Zoai:ubibliorum.ubi.pt:10400.6/8865Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T00:49:08.918604Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Design Optimization for AM of MECSE CubeSat’s Mechanical System |
title |
Design Optimization for AM of MECSE CubeSat’s Mechanical System |
spellingShingle |
Design Optimization for AM of MECSE CubeSat’s Mechanical System Esteves, Miguel Costa Gonçalves Cubesat Fabricação Aditiva Mecse Otimização Topológica Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Aeronáutica |
title_short |
Design Optimization for AM of MECSE CubeSat’s Mechanical System |
title_full |
Design Optimization for AM of MECSE CubeSat’s Mechanical System |
title_fullStr |
Design Optimization for AM of MECSE CubeSat’s Mechanical System |
title_full_unstemmed |
Design Optimization for AM of MECSE CubeSat’s Mechanical System |
title_sort |
Design Optimization for AM of MECSE CubeSat’s Mechanical System |
author |
Esteves, Miguel Costa Gonçalves |
author_facet |
Esteves, Miguel Costa Gonçalves |
author_role |
author |
dc.contributor.none.fl_str_mv |
Gamboa, Pedro Vieira Machado, Miguel Sousa uBibliorum |
dc.contributor.author.fl_str_mv |
Esteves, Miguel Costa Gonçalves |
dc.subject.por.fl_str_mv |
Cubesat Fabricação Aditiva Mecse Otimização Topológica Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Aeronáutica |
topic |
Cubesat Fabricação Aditiva Mecse Otimização Topológica Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Aeronáutica |
description |
Magnetohydrodynamics/Electrohydronamics CubeSat Experiment (MECSE) is an under development CubeSat at University of Beira Interior (UBI), in a collaboration effort between C-MAST (Center for Mechanical and Aerospace Science and Technologies) and CEiiA (Centre of Engineering and Product Development). MECSE’s mission is to validate the theory that an electromagnetic field can re-shape the layer of plasma allowing communication during atmosferic re-entry of vehicles, avoiding out the Radio Frequency (RF) blackout. Currently MECSE presents a classic structure composed by one top and one end plate, connected by to side frames, connected itself by six ribs. All this structural elements are made of aluminium 7075. The goal of this masters dissertation is to develop a new structure by means of topology optimization with the goal of being produced by additive manufacturing, ensuring the structural integrity of the CubeSat and all of its components in its interior, vital to the sucess of the mission. The adopted approach to reach this new stucture started by the creation of an aluminium shell structure with the dimensions of the MECSE. Mass points were applied in the Center of Gravity (CG) of which systems an attached to the structure with rigid connectors. Constraints and loads were applied according to the requirements defined by the MECSE’s launch provider as well as the topology optimization’s objectives. The optimized structures obtained were then analyzed in order to validate the optimization process and the new structure. A ligther structure was achieved, with a mass saving of 115g. Attachements for all the components inside were defined as weel as an methodology for the assembly of the CubeSat. This final optimized geometry was reanalyzed and was concluded that a new assembly methodology must be developed since the proposed fragilize the stucture by reducing its first natural frequency for less than the requirements. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-11-22 2018-10-08 2018-11-22T00:00:00Z 2020-01-28T17:06:54Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
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http://hdl.handle.net/10400.6/8865 TID:202361705 |
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eng |
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eng |
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openAccess |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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