汽车行驶平顺性虚拟激励仿真

Vehicle Ride Comfort Pseudo-excitation Simulation

为了推广虚拟激励法在汽车振动分析中的应用,以汽车3自由度模型为例,建立了力学和数学模型。在虚拟的路面激励下,建立汽车系统结构的虚拟振动响应量。通过振动响应量的功率谱密度,分析了该车的行驶平顺性。结果表明,应用虚拟激励法基本理论求取汽车振动统计特性的方法易行而简单。

For the application of pseudo-excitation method in automobile vibration analysis, the mechanical and mathematical models of three-degree-of-freedom model of automobile are established. Under the road pseudo-excitation, the pseudo vibration responses of the automobile system structure are given. The ride comfort is analyzed by the power spectral density of vibration responses. The results show that it is an easy and simple method to obtain the statistical characteristics of vehicle vibration by using the basic theory of pseudo-excitation method.