【摘要】 以货车为研究对象，将其简化为八自由度动力学模型，用前后车轮的路面随机激励作为系统的输入，分析了系统的时域响应和频域响应，提出了一种预测汽车行驶平顺性并对其进行优化设计的方法，在汽车行驶平顺性的分析与研究中，具有一定的实用价值更多还原

【Abstract】 In this paper,a dynamic model with eight degrees of freedom was established for automobiles.In this model,four random excitatious respectively from four wheels were taken as the input functions of the vibration system.Time and frequency responses were calculated by using this model.The results show that this model can be better used in prediction of ride comfort and in its optimal design for automobiles.更多还原