【摘要】 基于刚柔耦合多体动力学理论，研究新型摩擦式缓冲装置中摩擦机构和弹性元件的动力学特性。首先构建缓冲装置的动力学模型，其次通过现场试验对模型的可靠性进行验证，最后对摩擦机构和弹性元件进行刚柔耦合多体动力学分析。研究结果表明：动态试验所得结果与现场试验所得数据的最大阻抗力、行程和容量的平均相对误差的绝对值均小于15%，说明该动力学模型具有较高的可靠性，可应用于动态仿真试验；摩擦机构中存在着接触力分布不均和应力集中的现象，弹性元件中外圆弹簧内侧应力是外侧的1.5倍左右。因此，在设计生产和运营维护缓冲装置时，要特别注意摩擦机构和弹性元件的磨耗情况，防止出现磨耗过度以及零件表面开裂等问题。更多还原

【Abstract】 Based on the theory of rigid-flexible coupling multi-body dynamics, the dynamic characteristics of the friction mechanism and elastic elements in the new friction buffer device were studied. Firstly, the dynamic model of the cushioning device was constructed. Secondly, the reliability of the model was verified by field experiment.Finally, the rigid-flexible coupling multi-body dynamics analysis of the friction mechanism and elastic elements was carried out. The results show that the absolute value of the average relative error between the results obtained in the dynamic test and the data obtained in the field test is less than 15%, indicating that the dynamic model has high reliability and can be applied to dynamic simulation tests. There are uneven contact force distribution and stress concentration in the friction mechanism. The stress of the inner side of the outer circular spring in the elastic element is about 1.5 times that of the outer side. Therefore, when designing, producing, operating and maintaining the buffer device, special attention should be paid to the wear of the friction mechanism and elastic elements to prevent problems such as excessive wear and surface cracking of the parts.更多还原