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车辆悬架系统的阻尼决定车辆悬架的特性,对车辆行驶平顺性和安全性具有重要影响。为了设计车辆的最佳减振器,利用悬架系统的最佳阻尼比,分析前后悬架系统减振器最佳阻尼系数,建立减振器最佳速度特性数学模型。利用多体动力学软件ADAMS/Car模块建立了重型牵引车整车刚柔耦合多体动力学模型,进行整车平顺性仿真分析和悬架系统动力学仿真。匹配结果表明,对该悬架系统,减振器所做的匹配设计是正确有效的,改善了悬架系统的运动特性和整车平顺性。
Damping of the vehicle suspension system determines the characteristics of the vehicle suspension and has a significant impact on the ride comfort and safety of the vehicle. In order to design the optimal vibration absorber of the vehicle, the best damping ratio of the front and rear suspension system shock absorber is analyzed by using the optimal damping ratio of the suspension system, and the mathematical model of the optimal speed characteristic of the vibration damper is established. The multi-body dynamic model of rigid-flexible coupling of heavy-duty tractor vehicle was established by multi-body dynamics software ADAMS / Car module, and the vehicle ride comfort simulation and suspension system dynamics simulation were carried out. The matching results show that the matching design of the suspension system and the shock absorber is correct and effective, which improves the movement characteristics and ride comfort of the suspension system.