Vehicle structural road noise transmission path under wheel excitation
LU Chihua1，LI Yongchao1，LIU Zhien2，LI Qiuyue2，LUO Ting3，XU Yanping3
1.Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan 430070, China;
2.Hubei Collaborative Innovation Center for Automotive Components Technology, Wuhan 430070, China;
3.Dongfeng Motor Corporation Technical Center, Wuhan 430070, China
Based on the basic principle of structural noise transmission path analysis, the CAE model of a vehicle for NVH performance simulation under the excitation of wheel center acceleration was established, and the method for optimizing the vehicle interior peak noise by matching the transfer function was discussed.Taking a certain SUV type of vehicle as a research object, the interior noise and wheel center acceleration of the vehicle at 60 km/h speed were measured at the Xiangyang test site.The wheel center acceleration was used as the boundary condition in the vehicle structural road noise analysis, and the noise near driver right ear was obtained by simulation.The simulation value of the vehicle interior noise is basically consistent with the experimental data, and there are obvious noise peaks at 56 Hz and 112 Hz.The largest contribution path of the peak noise at 112 Hz was determined by the transmission path analysis, and the vibration-vibration transfer function (VTF) of the suspension side in the path was analyzed.Then it was adjusted and optimized to match the noise-vibration transfer function (NTF) of the body-side.The result shows the peak noise at 112 Hz is reduced by 8.45 dB (A).
［2］谭晶晶，杜建科，李洪亮，等.基于传递路径分析的乘用车路面噪声优化控制［J］.汽车技术，2017(3): 19-23.
TAN Jingjing, DU Jianke, LI Hongliang, et al.Passenger car road noise optimization and control based on transfer path analysis ［J］.Automobile Technology, 2017(3): 19-23.
［3］廖毅, 罗德洋, 余义,等.基于工况传递路径分析的汽车路噪优化方法研究［J］.汽车技术, 2019(8): 46-49.
LIAO Yi, LUO Deyang, YU Yi, et al.Research on optimization method of road noise based on operational transfer path analysis［J］.Automobile Technology, 2019(8): 46-49.
［4］王万英，靳晓雄，彭为，等.轮胎振动噪声结构传递路径分析［J］.振动与冲击， 2010，29(6): 88-91.
WANG Wanying, JIN Xiaoxiong, PENG Wei, et al.Structural transfer path analysis of tire vibration and noise［J］.Journal of Vibration and Shock, 2010,29(6): 88-91.
［5］余雄鹰，闵福江，文伟，等.轮胎/路面噪声的结构传递路径分析［J］.汽车工程，2013(11): 79-83.
YU Xiongying, MIN Fujiang, WEN Wei, et al.Structural transfer path analysis of tire/road noise［J］.Automotive Engineering, 2013(11): 79-83.
［6］王永亮，刘浩，郑卿卿，等.车辆结构噪声传递特性及其峰值噪声成因的分析［J］.汽车工程， 2018，40(12): 89-94.
WANG Yongliang, LIU Hao, ZHENG Qingqing, et al.Analysis on the transfer characteristics of vehicle structure-borne noise and the cause of its peak noise［J］.Automotive Engineering, 2018,40(12): 89-94.
［7］赵伟丰, 王文彬, 周浩东.车内低频路噪问题的分析与控制［J］.噪声与振动控制, 2019,39(3): 142-146.
ZHAO Weifeng, WANG Wenbin, ZHOU Haodong.Analysis and control of interior low-frequency road noise of a car［J］.Noise and Vibration Control, 2019,39(3): 142-146.
［8］PLUNT J.Examples of using transfer path analysis (TPA) together with CAE-models to diagnose and find solutions for NVH problems late in the vehicle development process: 2005-01-2508［R］.New York: SAE International, 2005.
［9］ANTONY V.Commercial vehicle NVH refinement through test-CAE development approach: 2013-01-1006［R］.New York: SAE International, 2013.
［10］YOSHIDA J, HAYASHI D, MAJIMA R, et al.Extracting of high contributing body vibration mode to road noise utilizing operational TPA and CAE［J］.Transactions of Society of Automotive Engineers of Japan, 2019,50(2): 430-435.
［11］AVUTAPALLI B.A case study on road noise source identification and reduction measures in a compact SUV: 2017-01-1863［R］.New York: SAE International, 2017.
［12］伍先俊，吕亚东，隋富生.工况传递路径分析法原理及其应用［J］.噪声与振动控制， 2014，34(1): 28-31.
WU Xianjun, L Yadong, SUI Fusheng.Basic theory of operational transfer path analysis and its application［J］.Noise and Vibration Control, 2014, 34(1): 28-31.
［14］侯献军，张强，刘志恩，等.某微型车车内振动噪声分析及控制［J］.噪声与振动控制， 2015，35(5): 111-115.
HOU Xianjun, ZHANG Qiang, LIU Zhien, et al.Analysis and control of the interior noise and vibration of a mini-vehicle［J］.Noise and Vibration Control, 2015,35(5): 111-115.
［15］张焰.基于有限元功率流的整车振动与噪声分析［D］.武汉：武汉理工大学，2015.
［16］陈钊，霍俊焱，吴星晨，等.整车路噪仿真及优化技术应用［J］.噪声与振动控制, 2019,39(3): 147-151.
CHEN Zhao, HUO Junyan, WU Xingchen, et al.Application of vehicle road noise simulation and optimization technology［J］.Noise and Vibration Control, 2019,39(3): 147-151.
