Vibration analysis of a half-car model with semi-active damping

Abstract

In this paper, analysis of a half-car model with linear and nonlinear semi-active dampers is performed. Using Matlab-Simulink software, a response of the system to a harmonic excitation of variable frequency and to an impulse excitation is found. The effect of both the distribution of spring-supported mass and the asymmetry of the support on the frequency characteristics of velocities and displacements at the mounting points of the dampers are analyzed. Additionally, characteristics of forces generated by the semi-active dampers and the response of the system when crossing an obstacle are determined. Keywords

Analysis of Chassis Flexibility for Half-Car Model

“…According to Euler beam theory, Fig (2) [6] and Lagrangian Mechanics [7] which is used to model the beam with the concept of the frame [8] are used to derive the equations of motion. FEM of the flexible two Dof model is presented in the time domain [9].…”

“…By using the concept of tracking frame [4] to derive the equations of motion. FEM of the flexible two Dof model is presented in the time domain Fig (2). To understand the underlying dynamics of the system.…”

“…Multibody dynamics system (MBS) [5], Finite Element Method (FEM) [6] and Matlab software [14][15], Etc. are widely Euler beam theory [2] and Lagrangian Mechanics [3] are used to model the beam and along used in mechanical design and analysis. In this paper, we use the Finite Element Method to solve the beam equation with the helper of Matlab.…”

“…Three types of suspension systems categorize as passive, semi-active, and active vehicle suspension systems are modeled. The analyses of a half car model of a vehicle by a semiactive suspension system [2]. are performed considering the chassis of the half-car model is rigid under random road excitations [3].…”

The modelling and analysis of shock absorbers with stroke-dependent damping

“…In order to assess the effectiveness of hydraulic dampers, analyses of various vehicle models, e.g. quarter-car or half-car [6,7,12] are performed. System responses to harmonic excitations of variable frequencies, impulse or random forces, are most commonly studied.…”