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Abstract(s)
O desporto automóvel é um dos desportos mais populares do mundo e de grande importância como laboratório de testes para a implementação de equipamentos, componentes ou sistemas nos veículos modernos de estrada. A FIA - Federação Internacional do Auto móvel - abrange diversas categorias de desporto motorizado, sendo uma delas a categoria CN, cujos veículos integrantes são construídos especificamente para circular em pista. A Dissertação apresentada, conducente ao grau de Mestre em Engenharia Automóvel, teve como principais objetivos a revisão da Literatura a respeito do tópico em estudo -
Conceção, projeto e análise estrutural de um chassis para veículo de desporto automóvel pertencente à categoria CN-FIA - seguida das fases de análise da regulamentação FIA aplicável, desenvolvimento de projeto e análise estrutural estática do modelo desenvolvido, considerando um ensaio em regime linear material e geométrico. Os sub-tópicos abordados na presente Dissertação focam-se, sobretudo, nos temas chassis,
sistema de suspensão, elementos da suspensão e parâmetros fundamentais de projeto, além de uma breve abordagem às principais aplicações da simulação computacional no ramo, segundo o Método de Elementos Finitos (MEF). Os resultados obtidos nos ensaios simulados computacionalmente à célula de sobrevivência
e aos arcos de segurança foram satisfatórios, na medida em que inseridos dentro dos limites preconizados pela FIA, a respeito da categoria CN. Assim, considera-se que o quadro tubular desenvolvido estaria apto para ser fabricado, ensaiado de acordo com a regulamentação FIA e utilizado na prática de desporto automóvel.
Numa fase final, foi ainda idealizado um sistema de suspensão dianteira de ataque ao conjunto mola-amortecedor por intermédio de tirante (pushrod) e balanceiro para equipar o quadro desenvolvido formando, assim, um chassis tubular.
Motorsport is one of the most popular sports in the world and is of great importance as a testing ground for the implementation of equipment, components or systems in modern road vehicles. The FIA - International Automobile Federation - covers several categories of motorsport, one of which is the CN category, whose vehicles are specifically built for track use. The Dissertation presented, leading to the degree of Master in Automotive Engineering, had as its main objectives the review of the Literature on the topic under study - Design, project and structural analysis of a chassis for a sports vehicle belonging to the CN-FIA category - followed by the phases of analysis of the applicable FIA regulations, project development and static structural analysis of the developed model, considering a test under linear material and geometric regime. The sub-topics covered in this Dissertation focus mainly on the themes of chassis, suspension system, suspension elements and fundamental design parameters, as well as a brief look at the main applications of computational simulation in the field, according to the Finite Element Method (FEM). The results obtained in the computationally simulated tests on the survival cell and rollover structures were satisfactory, as they fell within the limits set by the FIA for the CN category. Thus, it is considered that the developed tubular frame would be suitable for manufacturing, testing according to FIA regulations and use in motorsport. In the final phase, a front suspension system was designed to attack the spring-damper assembly using a pushrod and rocker arm to equip the developed frame, thus forming a tubular chassis.
Motorsport is one of the most popular sports in the world and is of great importance as a testing ground for the implementation of equipment, components or systems in modern road vehicles. The FIA - International Automobile Federation - covers several categories of motorsport, one of which is the CN category, whose vehicles are specifically built for track use. The Dissertation presented, leading to the degree of Master in Automotive Engineering, had as its main objectives the review of the Literature on the topic under study - Design, project and structural analysis of a chassis for a sports vehicle belonging to the CN-FIA category - followed by the phases of analysis of the applicable FIA regulations, project development and static structural analysis of the developed model, considering a test under linear material and geometric regime. The sub-topics covered in this Dissertation focus mainly on the themes of chassis, suspension system, suspension elements and fundamental design parameters, as well as a brief look at the main applications of computational simulation in the field, according to the Finite Element Method (FEM). The results obtained in the computationally simulated tests on the survival cell and rollover structures were satisfactory, as they fell within the limits set by the FIA for the CN category. Thus, it is considered that the developed tubular frame would be suitable for manufacturing, testing according to FIA regulations and use in motorsport. In the final phase, a front suspension system was designed to attack the spring-damper assembly using a pushrod and rocker arm to equip the developed frame, thus forming a tubular chassis.
Description
Keywords
Desporto automóvel Categoria CN Regulamentação FIA Chassis tubular Sistema de Suspensão Método de Elementos Finitos (MEF)