中文摘要：

在车辆悬架强度设计问题的研究中，抗侧倾液压互联悬架系统的刚度和阻尼不仅与车辆的机械系统的参数相关，还与液压系统的参数相关。为了研究液压互联悬架系统参数对悬架等效刚度和阻尼的影响，建立了装有抗侧倾液压互联悬架的SUV车辆在侧倾平面内的频域振动半车模型，推导了系统的等效刚度和阻尼的表达式，得到了由系统参数求悬架等效刚度和阻尼的仿真分析方法，并分析了液压缸上下腔的面积、液压缸的直径、储能器的预充压力等参数对系统的等效刚度和阻尼的影响。结果表明抗侧倾液压互联悬架系统的液压元件参数改变对系统等效侧倾刚度及系统的等效阻尼的影响很大，但对系统的垂向等效刚度影响很小。仿真结果可以为液压互联悬架系统的刚度和阻尼设计提供理论依据。

英文摘要：

The stiffness and damping of the anti - rolling hydraulically interconnected suspension （HIS） system depend on not only the parameters of the mechanical system but also the parameters of the hydraulic system. To study the effects of HIS parameters variation on its stiffness and damping, a half - car model of a SUV fitted with anti - roll- ing HIS system is established in the domain of frequency, the expressions of equivalent independent stiffness and damping of the system are derived, the method to get the equivalent independent suspension stiffness and damping with suspension system parameters is found. And then simulations are carried on to analyze the influence of variation of cross -sectional area of the hydraulic cylinder chamber, the inner diameter of the hydraulic pipeline, the pre - charge pressure of accumulator on the equivalent independent suspension stiffness and damping of roll and bounce mode. Results show that hydraulic component parameter variation of the anti - rolling HIS system has a great influ- ence on equivalent independent suspension stiffness and damping of the roll mode, but a little on the equivalent inde- pendent suspension stiffness of the bounce mode. The results provide theory basis for the reasonable design of stiff- ness and damping of the HIS system.