全地面起重机连通式油气悬架平顺性研究

基于全地面起重机连通式油气悬架单桥四自由度车辆模型,建立ADAMS单桥动力学模型、AMESim液压系统模型以及MATLAB/Simulink的C级路面谱模型,以AMESim作为主控程序进行联合仿真,分析蓄能器初始充气压力、蓄能器容积及悬架油缸中阻尼孔径等参数对车辆平顺性的影响规律。分析结果得出:在一定范围内,随着蓄能器的总容积和悬架油缸阻尼孔径的增大,车身的加权加速度均方根值变小,即油气悬架的平顺性变好,随着蓄能器的初始充气压力的增大,车身的加权加速度均方根值先变小后变大,即油气悬架的平顺性先变好后变差。

Based on connectedhydro-pneumatic suspension of the single bridge vehicle model of the all-terrain crane which is 4-DOFs,the establishment of a single bridge ADAMS dynamics model,a C-class road spectrum model with MATLAB / Simulink and hydraulic system model with AMESim is made to co-simulate that AMESimis worked as a master program,to analyze the factors of the vehicle ride comfort,containing the gasprecharged pressure of accumulator,accumulator volume and suspension damping cylinder aperture and so on.The results obtained:within a certain range,with the increase of the total volume of the accumulator and suspension damping cylinder aperture,body weighted acceleration becomes smaller,the ride becomes pneumatic suspension is good,with the accumulator initial inflation pressure increases,the weighted acceleration of the body after the first smaller larger,pneumatic suspension after that first ride becomes better then worse.