基于磁流变液阻尼器的高速货车转向架动力学性能研究

Dynamic Performance Research of Magneto-rheological Fluid Damper on the High-speed Freight Bogie

分析了现有货车转向架弹性旁承结构的局限性,针对高速货车转向架悬挂系统在运行稳定性和运行安全性两方面的设计难点,提出以可控阻尼的磁流变液阻尼器代替弹性旁承,拟解决高速运行条件下车辆在直线行驶稳定性和曲线通过安全性两方面难以兼顾的问题。通过在Adams/Rail下建立高速货车转向架和车辆动力学模型,仿真对比了安装弹性旁承和磁流变液阻尼器两种抗蛇行连接方式的货车转向架在直线、曲线上的动力学性能。结果验证了磁流变液阻尼器在货车转向架上运用的可行性,以及高速运行条件下其相对于弹性旁承的优越性,是一种理想的可控阻尼装置。

In this paper, the limitation of the resilient side bearings in freight car bogie is analyzed firstly.Considering the design diflqculties of the freight ear bogie suspension system in both running stability and safety, a newly type of controllable damper based on magneto- rheologieal fluid is presented to replace the side bearing, Which may solve the contradiction between the critical velocity and curve negotiating performance under high- speed condition. After the vehicle dynamic models with different anti - hunting dampers are established based on Adams/Rail, and simulated to assess the dynamic performance on straight line and curve, the result shows that, the magneto-rheological fluid damper is feasiblely used on freight car bogie, and more effectively than side bearing especially under high- speed condition.