基于动态仿真的车辆悬架模型搭建
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摘要
考虑到车辆在实际道路上行驶时不断承受来自路面的高频激励作用,在搭建悬架模型时,传统的线性衬套模型不能充分反应悬架在随机载荷冲击作用下的动态特性。因此,基于柔性多体动力学理论,利用有限元分析软件对衬套模型进行模态分析,生成柔性体衬套模型并搭建样车悬架模型。将试车场采集得到的路面载荷谱作为激励,进行动态仿真及台架试验。分析二者结果可知,该建模方法对于研究悬架动态K&C特性具有一定的参考意义。
Considering that vehicles are constantly subjected to high-frequency excitation from the road surface when driving on the actual road, the traditional linear bushing model can not fully reflect the dynamic characteristics of the suspension under random load impact. Therefore, based on the flexible multi-body dynamics theory, the finite element analysis software is used to analyze the modal of the bushing, build the flexible bushing model and build the suspension model of the prototype. The dynamic simulation and bench test are carried out by using the road load spectrum collected from the test yard as excitation. The results show that the modeling method has certain reference significance for the study of suspension dynamic K& C characteristics.
Considering that vehicles are constantly subjected to high-frequency excitation from the road surface when driving on the actual road, the traditional linear bushing model can not fully reflect the dynamic characteristics of the suspension under random load impact. Therefore, based on the flexible multi-body dynamics theory, the finite element analysis software is used to analyze the modal of the bushing, build the flexible bushing model and build the suspension model of the prototype. The dynamic simulation and bench test are carried out by using the road load spectrum collected from the test yard as excitation. The results show that the modeling method has certain reference significance for the study of suspension dynamic K& C characteristics.
引文
[1]黄海波,翁胜峰,陈星欣.双横臂悬架的非线性多体建模与动力学分析[J].机械科学与技术,2011,30(02):331-335.
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[5]石月奎,李洪亮,王海洋.扭力梁悬架有限元模态分析中的橡胶衬套动刚度赋值方法[J].汽车技术,2016(06):15-18.
[6]王文源.基于刚柔耦合越野车平顺性仿真分析与试验研究[D].南京:南京理工大学,2014.
[7]Kong Xiangzhen, Qin Fang, Li Q M, et al. Modified K&C model for cratering and scabbing of concrete slabs under projectile impact[J].International Journal of Impact Engineering,2017,108:217-228.
[2]郑松林,顾晗,冯金芝,等.柔性体衬套模型对四连杆悬架K&C特性的影响[J].汽车工程,2012,34(8):723-726.
[3]陈军. Msc. ADAMS技术与工程分析实例[M].北京:中国水利水电出版社,2008.
[4]李林华.橡胶衬套刚度对悬架K&C特性及整车操纵稳定性的影响[D].长沙:湖南大学,2011.
[5]石月奎,李洪亮,王海洋.扭力梁悬架有限元模态分析中的橡胶衬套动刚度赋值方法[J].汽车技术,2016(06):15-18.
[6]王文源.基于刚柔耦合越野车平顺性仿真分析与试验研究[D].南京:南京理工大学,2014.
[7]Kong Xiangzhen, Qin Fang, Li Q M, et al. Modified K&C model for cratering and scabbing of concrete slabs under projectile impact[J].International Journal of Impact Engineering,2017,108:217-228.