高速列车减振器组合阻尼特性效应研究

Study of Combination Damping Characteristics Effect of High-Speed Train Damper

针对我国轨道车辆型号多、不同型号减振器参数差异较大的状况,开展减振器组合阻尼特性效应研究.采用动力学仿真软件SIMPACK建立车辆系统动力学模型,加入实测武广线轨道激励并考虑车辆系统非线性关系,在模拟运行速度300 km/h的情况下得到动力学性能指标,分析抗蛇行减振器和二系横向减振器组合阻尼作用对车辆动力学性能的影响.结果表明:合理的抗蛇行减振器和二系横向减振器组合阻尼参数可明显提高车辆动力学性能,车辆平稳性和稳定性主要受抗蛇行阻尼的影响,受二系横向阻尼的影响较小;建议高速车辆减振器的选取综合考虑阻尼参数的组合效应,适当增大抗蛇行阻尼的同时,合理减小二系横向阻尼,本研究可以为减振器参数的选取和优化提供相应的理论依据.

Aiming at the situation that there exist many types of rail vehicles in China and the parameters of diffe-rent types of shock absorbers are quite different,the damping characteristics effect of the shock absorbers are stu-died.Through the dynamic simulation software SIMPACK to establish the vehicle system dynamics model,joining the measured orbit incentive of line of Wuhan-Guangzhou and taking into consideration the nonlinear relationship of the vehicle system,the dynamic performance index is calculated at the running speed of 300 km/h,and analysis is made of the effect of the combined damping of anti-yaw damper and secondary lateral damper on vehicle dynamic performance.The results show that reasonable combined damping parameters of anti-yaw damper and the secondary lateral damper can obviously improve the vehicle s dynamic performance.The stability of the vehicle is mainly affected by the damping of anti-yaw damper while the influence of the secondary lateral damper is small.It is suggest-ed that the selection of high-speed vehicle dampers should consider the combination effect of damping parameters,increase the anti-yaw damping appropriately,and reasonably reduce the lateral damping of the second system.This study can provide corresponding theoretical basis for the selection and optimization of shock absorber parameters.