Fuzzy Boundary for Beams Vibrations in Vehicles

AUTOR(ES)

FERREIRA, M. P. S.; JAFELICE, R. M.; SANCHES, L.

FONTE

Trends in Computational and Applied Mathematics

DATA DE PUBLICAÇÃO

2022

RESUMO

ABSTRACT This work aims to study the transversal motion of a car’s chassis, modeled by a beam and supported at its ends by two sets of spring-damper elements. A finite differences method is utilized along with Robin boundary conditions to solve the mathematical modeling. The constants of the boundary conditions are modeled by a fuzzy parameter obtained through a Fuzzy Rule-Based System (FRBS) acting on the different vibrations of the model, depending on the number of spirals and time of use of the spring. The contributions of this study is based on considering the spring’s elastic constant as a relevant instrument acting in the system, due to the fact that analytic formula to perform these calculations, does not consider the time of use. Indeed, the vehicle’s mechanical components might have their properties altered due to the fatigue process, for example. The impacts of the car dynamics’s property evolution might induce undesirable passenger’s discomfort up to the vehicle performance loss. The results showed that the time of use of the spring influences the vehicle’s displacement due to the loss of stiffness, thus affecting its stability.

Documentos Relacionados

• Nonlinear Vibrations of Cantilever Timoshenko Beams: A Homotopy Analysis
• Behavior of granite-epoxy composite beams subjected to mechanical vibrations
• Vibrations of beams with a variable cross-section fixed on rotational rigid disks
• Stress-Based Finite Element Methods for Dynamics Analysis of Euler-Bernoulli Beams with Various Boundary Conditions
• Chaotic synchronization of vibrations of a coupled mechanical system consisting of a plate and beams