油气弹簧力学特性分析与试验研究

针对叠加阀片的阻尼阀结构，给出了基于等效厚度法则的阀片变形计算方法，推导了缝隙参数与阀片变形量之间的函数关系式。研究了环形缝隙节流的解析计算，运用流体力学速度边界层理论推导了紊流状态下的缝隙流量表达式。联立范德瓦尔实际气体状态方程，建立了单气室油气弹簧的数学模型。仿真分析了系统弹性力和总输出力随位移的变化关系，与试验数据比较验证了推导过程的正确性。对比研究了相关结构参数对系统输出力的影响规律，为阻尼阀的精确设计提供了参考。

Mechanical Characteristic Analysis and Experiment Research of Hydro-Pneumatic Spring

Taking aim at damping valve with overlapping slices the calculation method of fold slices de?flection based on the equivalent thickness rules was presented, and the expressions between aperture parameters and deformation of slice were deduced. The throttle analytic calculation of annular aperture was researched, and the flow equation of aperture under the turbulence state was deduced by using the boundary layer theory, rhe nonlinear mathematic model of Hydro-pneumatic spring with single gas chamber was established by using the Van der Waals state equation of real gas. The relations between elastic force and the total output force vs. the displacement were studied, and the correctness of model was validated through comparing with the experimental data. The influence rules of structure parame?ters of valve on the output force of hydro-pneumatic spring were studied, which offer reference to accu?rately design the damping valve.