轮胎动力特性是影响汽车行驶性能的重要一环。本文根据轮胎的实际结构，建立了由帘布层、带束层和橡胶层组成的轮胎复会材料力学模型，研究了轮胎的模态频率和振型，得到了与实验基本相同的结果。 Tire dynamic characteristics is an important part of driving performance. According to the actual structure of the tire, the mechanical model of the tire recoverable material composed of the ply, the belt and the rubber layer is established. The modal frequencies and modes of the tire are studied. The same results as the experiment are obtained.