Suspension Dynamic Performance Analysis of Multi-axle Vehicles
The purpose of this study is to analyze the suspension dynamic performance of multi-axle vehicles, and to investigate the effects of each vehicle parameter on the vehicle dynamics. A generalized numerical model of multi-axle vehicles is developed using MATLAB to simulate the vehicle dynamics of multi-axle vehicles and to observe the time and frequency response. First, the basic properties of the vehicle suspension system are analyzed. Then, the effect of axle numbers on suspension dynamic performance is analyzed. It is found that when the number of axles increases, the wheelbase filtering effect is more significant and the suspension dynamic performance is improved. Moreover, the effects of vehicle parameters on the suspension dynamic performance of multi-axle vehicles are analyzed and a generalized conclusion on the effects of suspension parameter configurations and center of gravity position on vehicle dynamics is also proposed. Finally, a method to optimize the suspension dynamic performance is proposed to provide a basis for the design of the chassis of the multi-axle vehicle and to verify the conclusions presented. According to the analysis of this study, the generalized properties of multi-axle vehicle suspension dynamic performance is understood.
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