基于整车动力学模型的虚拟迭代技术分析  

Virtual iteration technology analysis based on vehicle dynamics model

作　　者：李鹏宇 尹辉俊[1] 官勇健 柳泽田 Li Pengyu;Yin Huijun;Guan Yongjian;Liu Zetian(Department of mechanical and traffic engineering, Guangxi University of Science and Technology,Guangxi Liuzhou 545006)

机构地区：[1]广西科技大学机械与交通工程学院,广西柳州545006

出　　处：《汽车实用技术》2019年第8期70-73,共4页Automobile Applied Technology

基　　金：广西高等学校优秀人才资助计划项目(桂教人[2011]40号);广西自然科学基金项目(2013GXNSFAA019319);广西科技计划项目(桂科攻1348005-12);广西重点实验室建设资助项目(桂财教[2013]51号13-A-01-06);广西研究生教育创新计划资助项目(YCSW2017202);广西科技大学硕士研究生创新项目(GKYC201703)

摘　　要：以Adams/Car建立的整车多体动力学模型为载体,并以在试验场测试得到的轮心加速度、悬架弹簧位移和轮心力作为整车虚拟迭代的实测信号。在FEMFAT.Lab软件中建立实测信号和轮心位移响应信号间的传递函数。通过传递函数反求出轮心位移,并作为输入载荷,仿真分解得到车身与底盘连接点动态载荷,作为后期虚拟疲劳试验的必要条件。The vehicle multi-body dynamics model established by Adams/Car, which is used as the carrier, and the wheel center acceleration, suspension spring displacement and wheel center force obtained in the test field are taken as the measured signals of the virtual iteration of the whole vehicle. In FEMFAT. Lab software, The transfer function between the measured signal and the wheel center displacement response signal is established. The wheel center displacement is obtained by the transfer function, and as the input load, the dynamic load of the connection point between the body and the chassis is obtained by simulation decomposition, which is a necessary condition for the later virtual fatigue test.

关 键 词：多体动力学 虚拟迭代 传递函数 载荷谱 

分 类 号：U467[机械工程—车辆工程]