作　　者： (张云）; (周孔亢）; (钱宽）;

机构地区： 江苏大学汽车与交通工程学院,江苏镇江212013

出　　处： 《江苏大学学报（自然科学版）》 2017年第4期410-415,共6页

摘　　要： 以互联空气悬架为研究对象,通过搭建整车试验台架研究不同互联模式下车身加速度频率响应,综合车辆动力学、工程热力学和流体力学理论,建立集成非互联、横向互联、纵向互联和四角互联的互联空气悬架整车动力学模型,仿真研究互联模式对车身固有频率的影响,从频域和时域2方面研究互联模式在C级路面,车速为60 km·h^(-1)工况下的车身加速度响应规律.结果表明:与非互联模式相比,互联空气悬架车辆在正弦对扭激励下,前左簧上质量加速度均方根值在中低频为0.5~7.0 Hz时均有不同程度的改善,横向互联和四角互联模式能降低侧倾角固有频率,纵向互联和四角互联能降低俯仰角固有频率,在随机路面激励下3种互联模式下乘坐舒适性均得到提升. Taking the interconnected air suspension as research object, the acceleration frequency responses under different interconnected modes were investigated by building a vehicle test bench. Based on vehicle dynamics, thermodynamics and fluid mechanics, the full vehicle model with interconnected air suspension was established and simulated with integrating non-interconnection, lateral interconnection, longitudinal interconnection and four-corner interconnection. The effects of four interconnected modes on bounce, pitch and roll frequency were analyzed. The acceleration responses of vehicle at 60 km·h^-1 on level C pavement were investigated in both frequency and time domain. The results show that compared with non-interconnection, the RMS of spring mass acceleration of interconnected air suspension in 0.5 - 7.0 Hz is improved under twisted sine excitation, and the roll frequency is reduced by lateral and four- corner interconnection. The pitch frequency is reduced by longitudinal and four-corner interconnection, and the ride comfort in three interconnected modes is improved on the random road.

关 键 词： 空气悬架 互联模式 台架试验 仿真分析 振动性能