The distribution of the tire side force was obtained by using geometric deformation of contact patch of cornering tires and the principle of modeling tire with experimental modal parameters.

对轮胎进行侧向激振试验得到轮胎的侧向模态参数，依据轮胎侧偏时印迹的几何变形及模态参数建模的思想，得到了侧向力分布。

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Then vertical contact dynamics of tire is analyzed with contact patch considered, and that of the system composed of wheel, suspension and car body are analyzed by using modal synthesis method.

然后计算了考虑接地印迹长度的垂直接地动特性，并采用模态综合方法分析了车轮、悬架与车身组合系统的特性。

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