电动车路噪仿真分析及实验研究  

Simulation analysis and experimental research on road noise of electric vehicle

作　　者：陈东[1,2] 金栋 邓磊 贾慧芳[1,2] CHEN Dong;JIN Dong;DENG Lei;JIA Huifang(Product Development and Technology Center,Jiangling Motors Co.,Ltd.,Nanchang 330208,Jiangxi,China;Jiangxi Key Laboratory of Vehicle NVH,Nanchang 330208,Jiangxi,China)

机构地区：[1]江铃汽车股份有限公司产品开发技术中心,江西省南昌市330208 [2]江西省汽车噪声与振动重点实验室,江西省南昌市330208

出　　处：《农业装备与车辆工程》2023年第12期121-125,共5页Agricultural Equipment & Vehicle Engineering

摘　　要：针对电动车路噪问题的仿真分析及预测,提出一种基于路面谱的路噪仿真分析方法。首先,对某试验场NVH路面形貌进行扫描,并建立表征路面形貌的高程数据谱;然后,将表征路面形貌的高程数据转为路噪仿真分析所需的路面激励谱,建立整车有限元模型,对电动车的路噪进行仿真分析。将仿真分析计算所得的车内噪声响应情况与实验对比,最终验证了基于扫描路面形貌谱的路噪仿真分析的可靠性。这种分析方法可在车辆研发早期较准确预测各种NVH实际路面激励下车内噪声响应情况,为路噪研究提供一定的参考。In order to simulate and predict the road noise of electric vehicles,a road noise simulation analysis method based on road profile spectrum was proposed.First,based on scanning the proving ground NVH road profile,an elevation data spectrum representing the scanning proving ground NVH road profile was established.Then,converting the elevation data spectrum into the road excitation spectrum required for road noise simulation analysis,and the full vehicle finite element model was established.The road noise of electric vehicles was simulated and analyzed,the interior noise obtained from the simulation analysis was compared with the experiment,the reliability of road noise simulation analysis based on scanning proving ground NVH road profile spectrum was verified.The method using actual scanned road profile as excitations input to simulation can effectively predict the road noise and vibration during the vehicle development early stage,and has important significance for road noise study.

关 键 词：路面形貌谱 电动车路噪 整车建模 路噪仿真 路噪实验测试 路噪对标 

分 类 号：U469.72[机械工程—车辆工程] U467.1[交通运输工程—载运工具运用工程]