科研之友
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摘要
Existing non-Gaussian closure method is usually applied to non-linear systems with white noise excitation only. But random vibration of vehicle is excited by correlated road spectrum. To solve vibration responses of a non-linear automotive suspension system, the non-Gaussian closure solution procedure is improved by introducing an additional subsystem which described by a simple differential equation to the vehicle model. A car model with two degrees of freedom against three different types of damping is analyzed based on this proposed method. Some important parameters such as acceleration response, relative loads between the wheel and the road, and passing-through frequency of suspension system were calculated effectively.
