中文摘要：

目前摩托车系统动态特性研究一般采用多刚体动力学方法，没有考虑摩托车车架空间柔性体、人和路对摩托车动态特性的影响，致使其动态特性与实际存在较大的差别。把车架作为空间柔性体，考虑发动机和路面激励，建立了人一机一路环境下摩托车系统刚柔耦合动力学模型，对其加速、制动、转向等工况下系统的动态特性进行了仿真和评价，试验验证了理论分析的正确性；对摩托车通过国家B级路面和凸台两种工况下系统的平顺特性进行了仿真和道路试验，研究结论对摩托车整车开发及动态性能优化有一定指导意义。

英文摘要：

Currently, the research on dynamic characteristics of motorcycle system usually adopts multi-rigid-body dynamic method without considering the influence of flexibility of motorcycle frame, human and road on the dynamic characteristics ofmotorcycle, which leads to the great difference between the analysis result and the reality. A new dynamic model of motorcycle is established by taking into account the flexibility of the motorcycle frame. Dynamic characteristics of the established system are studied through simulating the system under different driving conditions including acceleration, braking, and turning, and subjected to two types of road excitations including the State Grade B road and the bumper. Furthermore, the simulation results are validated through experiments. It has significance in the design and development of motorcycle and further optimization of its dynamic characteristics.