Análise numérica da rigidez torcional de um chassis automotivo
Tipo
TCC
Data de publicação
2021-12
Periódico
Citações (Scopus)
Autores
Silva, Igor Luciano Felix da
Orientador
Angelo, Gabriel
Título da Revista
ISSN da Revista
Título de Volume
Membros da banca
Programa
Resumo
O conceito de rigidez torcional é discretamente discutido e apresentado aos consumidores de automóveis e/ou a interessados na área. De finalidade estrutural e que influencia diversas características do automóvel, o chassi passa desde a escolha do seu material, espessura da chapa, escolha de perfil, até as simulações para a obtenção do deslocamento máximo e máximas tensões. Este artigo apresenta o estudo da rigidez torcional para um chassi automotivo de um veículo de uso misto (jipe). Para este estudo, o chassi analisado utilizado o método dos elementos finito (MEF) e considerado elemento tipo casca. O método consiste na adequada determinação de malha, onde o objeto é subdividir em diversos nós e elementos, que por sua vez analisam o comportamento físico de forma aproximada. Em adesão ao conceito do cálculo da rigidez torcional, foram propostas condições e simulações entre dois materiais (o aço estrutural e aço inoxidável). Com as simulações, pode-se observar que com o aumento da espessura as máximas deformações e tensões de Von mises tiveram significativa redução. Sendo o melhor desempenho obtido pelo aço estrutural, tal como a deformação máxima, tensão de Von Mises e rigidez torcional, resultando também em menor o ângulo de torção e maior coeficiente angular
The concept of torsional rigidity is discreetly discussed and presented to automobile consumers and/or those interested in the field. With a structural purpose and that influences several characteristics of the car, the chassis ranges from the choice of material, sheet thickness, choice of profile, to simulations to obtain the maximum displacement and maximum stresses. This article presents the study of torsional rigidity for an automotive chassis of a mixed-use vehicle (jeep). For this study, the analyzed chassis used the finite element method (FEM) and considered a shell-like element. The method consists of the proper mesh determination, where the object is subdivided into several nodes and elements, which in turn analyze the physical behavior in an approximate way. In adherence to the concept of torsional stiffness calculation, conditions, and simulations between two materials (structural steel and stainless steel) were proposed. With the simulations, it can be observed that with the increase in thickness, the maximum deformations and Von Mises stresses had a significant reduction. Being the best performance obtained by structural steel, such as maximum deformation, Von Mises stress and torsional stiffness, also resulting in smaller torsional angle and larger angular coefficient.
The concept of torsional rigidity is discreetly discussed and presented to automobile consumers and/or those interested in the field. With a structural purpose and that influences several characteristics of the car, the chassis ranges from the choice of material, sheet thickness, choice of profile, to simulations to obtain the maximum displacement and maximum stresses. This article presents the study of torsional rigidity for an automotive chassis of a mixed-use vehicle (jeep). For this study, the analyzed chassis used the finite element method (FEM) and considered a shell-like element. The method consists of the proper mesh determination, where the object is subdivided into several nodes and elements, which in turn analyze the physical behavior in an approximate way. In adherence to the concept of torsional stiffness calculation, conditions, and simulations between two materials (structural steel and stainless steel) were proposed. With the simulations, it can be observed that with the increase in thickness, the maximum deformations and Von Mises stresses had a significant reduction. Being the best performance obtained by structural steel, such as maximum deformation, Von Mises stress and torsional stiffness, also resulting in smaller torsional angle and larger angular coefficient.
Descrição
Palavras-chave
chassis , rigidez torcional , tensão de Von Mises