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针对车辆在各种路况行驶时阻尼阀频繁受到交变冲击力作用容易失效的特点,提出了研究阻尼阀水击压强的重要性。建立了环形节流阀片的单向阀物理模型,并分析水击波在阀门附近的传递规律。运用特征线法求解水击传递的偏微分方程组,考虑油路中的局部和沿程压力损失,将水击理论合理转化并应用到小型液压件中,创建了串联过油孔的阻尼阀水击数学模型。通过编程分析得出,随着过油孔结构参数的增大,阀门所受最大水击压强幅值及水击波振荡周期能够得到有效抑制,从而提高阀片抗冲击的可靠性,为阻尼阀设计提供了参考。 相似文献
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Study on the Availability Opening Size of Throttle and Affection to the Velocity Characteristic of Shock Absorber 总被引:1,自引:1,他引:0
Based on the solution of the governing differential equation for deformation of throttle slice while satisfying required boundary conditions, the coefficient (Gr) and an analytical formula for computing the deformation of throttle slice is presented through equivalency transformation, which is a concise, accurate and practical method for throttle slice design and characteristic analysis. Researched the deformation at any radius, compared with ANSYS FEA software by the simulation analysis, the availability opening size of throttle that was defined by the deformation at the valve mouth radius is studied. The affection of valve mouth radius to the damper characteristic is analyzed. Tests are made for the damper characteristic, compared with simulation results, it is shown that Gr method is an accurate computation method for computing the deformation of throttle slice at valve mouth radius, suitible to use in the damper design, analysis, and verification. The deformation at mouth radius could not be replaced with the outside radius. 相似文献
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针对自主研发的某型8×8轮式车辆半主动油气悬挂,首次开展了以实地跑车试验为基础的振动测试分析,给出了阻尼可调油气弹簧的结构简图以及半主动悬挂的控制原理,通过试验和曲线拟合的方式得出了电磁阀在不同电流下的流量系数.分别在起伏路和高速公路两种典型路况下,对车身不同位置的垂直振动加速度进行测试,验证了在实现阻尼实时调节的前提下,各测点加速度均方根值较被动式悬挂均得到了有效抑制,从而显著提高了车辆的整体行驶性能,所取得的第一手试验数据为国内在半主动悬挂方面的工程设计提供了参考. 相似文献
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