Abstract
This paper is aimed at analyzing the chaotic vibration of a vehicle variable-speed passing the consecutive speed control humps (SCHs) on a highway. We first studied consecutive SCHs-speed coupling excitation model and four degree of freedom (4-DOF) nonlinear vehicle suspension model. Then, The chaotic vibration of nonlinear vehicle is studied by numerical simulation under a 4-DOF nonlinear vehicle suspension model. Simulation results demonstrate that the chaotic motion may occur as the vehicle accelerates or decelerates to move over a series of the consecutive SCHs. Furthermore, The nonlinear motion law of vehicle suspension system and the critical condition of chaotic vibration are obtained.
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