MATHEMATICAL MODEL OF THE PROCESS OF CHANGING THE AMPLITUDE-FREQUENCY CHARACTERISTICS OF THE CAR SUSPENSION IN VIBRATION MODE WHEN THE TECHNICAL CONDITION OF THE SILENT BLOCKS CHANGES

Abstract

This article discusses the analytical study of the influence of the parameter of the technical condition of the suspension silent blocks on the amplitude-frequency response of the car springing system. The process of changing the magnitude of the oscillation amplitude and the displacement of the resonant frequency in the vibration mode is investigated. The regularities of the influence of the coefficient of residual damping of suspension silent blocks on the amplitude of fluctuations of the normal load on the wheels of the car during tests on vibration stands are revealed.
 Purpose – theoretical substantiation of the influence of the technical condition of the suspension silent block in terms of the power parameter on the amplitude-frequency characteristic of the car suspension system.
 Method or methodology for conducting work: in this article, when performing calculations, numerical methods for solving differential equations were used, as well as methods of mathematical modeling.
 Results: a mathematical model has been developed that is used for the analytical study of the influence of the technical state parameter of silent blocks on the amplitude-frequency characteristic of the suspension system.
 Practical implications: the obtained results can be used by manufacturers of vibration stands based on the EUSAMA method, organizations working in the field of developing methods and tools for diagnosing a car suspension, and also used to calculate the parameters of functioning of car suspension systems in stationary harmonic modes.