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Advisor(s)
Abstract(s)
O trabalho desenvolvido nesta dissertação insere-se no âmbito do projeto, análise e desenvolvimento do produto. De forma particular, neste trabalho é realizado um estudo e desenvolvimento, da suspensão posterior de um motociclo, focado no melhoramento da sua progressividade. O motociclo em causa é da marca e modelo Yamaha YZ 125 de 2006 sendo utilizado em desporto motorizado.
Numa primeira fase são aplicadas as metodologias de engenharia inversa no estudo da referida suspensão, suas dimensões e comportamento cinemático permitindo obter gráficos do comportamento do sistema de suspensão. Foram concebidos novos componentes com dimensões alteradas para uma melhor resposta do sistema. Numa segunda fase é realizada a modelação 3D dos novos componentes de sistema de suspensão. Foram também aplicadas ferramentas de FEA para o cálculo das tensões e deslocamentos a que os componentes ficam sujeitos, recorrendo ao software SolidWorks e a sua ferramenta simulation. Posteriormente é realizado um teste prático da condução do motociclo e avaliação experimental de tensões através de extensometria elétrica.
The work in this thesis is part of the scope of design, analysis and product development. In particular, this work is a study and development of the rear suspension of a motorcycle, focused on improving its progressiveness. The motorcycle in question is a Yamaha YZ 125 2006 model, which is used in motorsport. Initially methodologies of reverse engineering were used in the referred suspension study, its dimensions and kinematic behaviour have allowed to obtain graphics of the suspension system behaviour. New components were designed with changed dimensions, in order to get a better system response. In a second phase the 3D modeling of new suspension system components was performed. FEA tools were also applied in order to calculate the stress and displacement to which the components were subject to, using the SolidWorks software and its simulation tool. Later a practical motorcycle driving test was made as well as an experimental evaluation of tension though an electrical extensometer.
The work in this thesis is part of the scope of design, analysis and product development. In particular, this work is a study and development of the rear suspension of a motorcycle, focused on improving its progressiveness. The motorcycle in question is a Yamaha YZ 125 2006 model, which is used in motorsport. Initially methodologies of reverse engineering were used in the referred suspension study, its dimensions and kinematic behaviour have allowed to obtain graphics of the suspension system behaviour. New components were designed with changed dimensions, in order to get a better system response. In a second phase the 3D modeling of new suspension system components was performed. FEA tools were also applied in order to calculate the stress and displacement to which the components were subject to, using the SolidWorks software and its simulation tool. Later a practical motorcycle driving test was made as well as an experimental evaluation of tension though an electrical extensometer.
Description
Keywords
Veículos Motociclo Suspensões Ensaios experimentais Extensometria Motocross Simulação numérica Vehicles Motorcycle Suspensions Experimental trials Strain gauge Numerical simulation