基于随机路面的空气悬架平顺性研究

将空气弹簧的刚度特性曲线编写XML文件,与机械系统仿真分析软件ADAMS结合,建立了空气悬架的客车模型,并根据相关法规在ADAMS/Car Ride环境中对虚拟样机进行平顺性仿真,仿真结果在ADAMS/postprocessor环境中进行处理,给出了一种求得平顺性评价指标较为简便的方法。结果表明分析样车的悬架系统设计合理,虽舒适性随车速提高及路面等级的下降,加权加速度均方根值呈增大趋势,但仍然能保持在主观评价的舒适界限之内。

Ride comfort simulation research of air suspension based on random road surface

XML files for the air spring stiffness characteristic curve are compiled,and a vehicle model with an air suspension is established based on the software of ADAMS.Then ride comfort simulation for the virtual prototype is done according to relevant laws and regulations in ADAMS/car Ride circumstances,which result is processed in ADAMS /post processor to get a simple way to evaluate ride comfort.The result shows that the design for suspension system of the prototype is reasonable,and the weighted acceleration RMS value tends to be increase with the decrease of road surface grade,although the ride comfort is improved with speed of vehicle.However,the value is still remained in the subjective evaluation limits for ride comfort.