某电动汽车白车身模态实验及其动态特性评价
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摘要
为评价某电动汽车车身的动态特性,搭建了白车身模态分析实验平台,建立了该白车身几何模型,测试了共计268个测点的频率响应函数,对其进行了实验模态分析,得到了前三阶模态的固有频率和振型,通过与设计目标对比发现该白车身动态特性符合设计要求。
In order to evaluate the dynamic characteristics of an electric vehicle body, an experimental platform for modal analysis of body-in-white is set up, the geometry model of body-in-white is established. The frequency response function of 268 measuring points was tested, the experimental modal analysis is carried out. The natural frequencies and vibration modes of the first three modes are obtained. Compared with the design target, the dynamic characteristics of the body-in-white are in line with the design requirements.
In order to evaluate the dynamic characteristics of an electric vehicle body, an experimental platform for modal analysis of body-in-white is set up, the geometry model of body-in-white is established. The frequency response function of 268 measuring points was tested, the experimental modal analysis is carried out. The natural frequencies and vibration modes of the first three modes are obtained. Compared with the design target, the dynamic characteristics of the body-in-white are in line with the design requirements.
引文
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[7]陈海潮,周文超,徐中皓,等.基于统计分析的白车身刚度关键参数研究与应用[J].汽车工程,2016,38(10):1278-1282.
[8]宋纪侠,王彦,章睿,等.白车身模态试验与模态仿真对标研究[J].汽车科技,2016(4):83-86.
[9]姚再起,门永新,李落星,等.基于梁与接头灵敏度分析的白车身刚度模态优化[J].湖南大学学报(自然科学版),2017,44(4):9-15.
[10]陈旭.白车身有限元模态分析与试验模态分析[J].北京汽车,2017(3):46-48.
[11]焦学健,邢帅,赵慧力,等.基于Hyperworks某乘用车白车身刚度及模态分析[J].山东理工大学学报(自然科学版),2017,31(2):40-43,48.
[2]张建,唐文献,马宝,等.某轿车白车身试验模态分析[J].江苏科技大学学报(自然科学版),2012,26(2):146-149.
[3]刘成武,钱林方,洪亮.基于poly MAX的白车身锤击实验模态及灵敏度分析[J].福建工程学院学报,2013,11(4):359-363,3.
[4]王宏宇.某SUV白车身模态分析及优化设计[J].科技创新与应用,2014(15):12-13.
[5]张华鑫,童敏勇.某轿车白车身模态试验分析研究[J].机械研究与应用,2014(3):107-109.
[6]韩阳,李洪力,朱延鹏.某轿车白车身模态有限元分析与试验研究[J].机械研究与应用,2015(3):105-107.
[7]陈海潮,周文超,徐中皓,等.基于统计分析的白车身刚度关键参数研究与应用[J].汽车工程,2016,38(10):1278-1282.
[8]宋纪侠,王彦,章睿,等.白车身模态试验与模态仿真对标研究[J].汽车科技,2016(4):83-86.
[9]姚再起,门永新,李落星,等.基于梁与接头灵敏度分析的白车身刚度模态优化[J].湖南大学学报(自然科学版),2017,44(4):9-15.
[10]陈旭.白车身有限元模态分析与试验模态分析[J].北京汽车,2017(3):46-48.
[11]焦学健,邢帅,赵慧力,等.基于Hyperworks某乘用车白车身刚度及模态分析[J].山东理工大学学报(自然科学版),2017,31(2):40-43,48.