基于计算机虚拟样机技术的轿车悬架性能研究

Research on Car’s Suspension Performance Based on Computer Virtual Prototype Technology

采集广德试车场操纵性与平顺性试验环路的道路载荷谱,利用nCode软件对道路载荷谱进行编辑与处理,得到随机短波路、沥青振动带等多种不同路面的道路载荷,导入ADAMS中进行悬架动态仿真。因为传统的基于静态K&C特性分析的系统参数设计不足以满足复杂工况下整车对悬架的性能要求,而动态K&C试验具有更精确的响应结果,更能反应悬架的实际使用状态。最终在动态K&C试验台进行试验,对比动态、静态与台架试验的结果,验证了动态K&C仿真与试验结果更加接近,具有更精确的仿真结果。所以,对汽车悬架的动态特性研究对工程应用具有一定的帮助作用。

The load spectrum of the test loop road for maneuverability and smoothness of Guangde test field was collected.The load spectrum of the road was edited and processed with nCode software to obtain the load spectrum of random short-wave road,asphalt vibration belt and other road surfaces which import into ADAMS for suspension dynamic simulation.Because the traditional system parameter design based on static K&C characteristic analysis is not enough to meet the performance requirements of the whole vehicle under complex working conditions,while the dynamic K&C test has more accurate response results,which can better reflect the actual use state of the suspension.Finally,the dynamic K&C test bed was used for the test,and the results of dynamic,static and bench tests were compared to verify that the dynamic K&C simulation results were closer to the test results and had more accurate simulation results.Therefore,the study of dynamic characteristics of automotive suspension is helpful for engineering applications.