STOCHASTIC VIBRATION ANALYSIS OF AN AUTOMOBILE SUSPENSION SYSTEM USING THE QUARTER-CAR MODEL

Authors

  • LIVIA MENDONÇA NOGUEIRA ufrj ; cefet/rj

Abstract

A vehicle suspension is a system that is directly linked to passenger comfort and safety. Irregularities in the profile of the track cause vertical excitations that can be transmitted to the chassis in such a way that causes loss of stability and damage to the driver's health. The suspension system is intended to mitigate the effects of these disturbances. This set can be considered a mechanical filter through elastic and damping components when admitting or rejecting frequency ranges of the ground excitation spectrum. The properties related to these components, however, can present great variability due to the geometric configuration, manufacturing process, or even non-guaranteed traceability. Furthermore, the inherent unpredictability in the track profile encourages and motivates the study of vibration as a stochastic process. The present work proposes to adopt the Monte Carlo Method in the study of vibrations in vehicular suspension using the quarter-car model, and particularly, to identify the parameters with the greatest influence on its dynamic response. Stochastic results are considered in a 95 % probabilistic envelope and compared to deterministic responses

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Published

2022-05-17

Issue

Section

Artigos