一种新型水力缓冲器的缓冲特性研究

Study on Buffering Characteristics of a New Hydraulic Absorber

基于数值模拟的方法研究了一种新型水力缓冲器的缓冲特性。建立了缓冲器下落过程和缓冲过程的理论模型,包括结构运动控制方程、流量控制方程和流体-结构耦合控制方程。分析了下落过程中冲击力和套筒内部压强的时程变化,讨论了下落高度对最大冲击力和最大压强的影响,讨论了节流孔直径对最大冲击力的影响。

The buffering characteristics of a new type of hydraulic absorber were studied by numerical simulation. The motion equations for both the dropping and the buffering processes were established,which included the structural motion control equation,flow control equation and fluid-structure coupling control equations. Time histories of the impact force and the pressure in absorber cylinder during the dropping progress were analyzed. The maximum impact force and pressure were analyzed in terms of the varied dropping height. The analysis of effects of the throttle orifice diameters on the maximum impact force was conducted.