铁道车辆空气弹簧—可变节流阀垂向动态特性的研究

Research on Vertical Dynamic Character of Airspring-variable Throttle System for Railway Vehicle

采用有限元与试验结合的方法,准确地描述了空气弹簧变形和接触特性,应用空气动力学、工程热力学和传热学理论建立了空气弹簧垂向动态特性分析模型。经试验验证了模型和方法的正确性。详细分析和总结了激扰频率、幅值、节流孔面积、节流阀弹簧刚度、附加气室容积和内压对空气弹簧动态特性的影响和规律。

Using the FE method combining with tests, the deformation and contact characters of an airspring are described precisely, the model for airspring vertical dynamical character analysis is built by the theories of aerodynamics, engineering thermodynamics and heat transfer. The model is proved to be correct by tests. The effects and rules of the parameters, such as the excite frequency and amplitude, orifice area, spring stiffness of throttle, volume of auxiliary reservoir and pressure, on the airspring vertical character are analyzed and concluded in detail.