摘要
以某前置后驱SUV车型在研发过程中出现的车内轰鸣问题为研究对象,搭建整车扭振仿真模型,通过传动系扭振测试结果验证扭振仿真模型的有效性。使用整车扭振仿真模型提取的传动系与车身各接附点载荷,激振整车振动噪声响应模型,得到车内响应点声压幅值,并通过车内噪声测试对有限元分析结果的有效性进行验证。联合扭振与整车振动噪声响应模型仿真分析,提出优化飞轮参数的车内轰鸣声问题解决方法。实测改进后车内噪声峰值衰减2.8dB,车内轰鸣声主观感受有显著改善。为传动系扭振引致的车内NVH问题提供了系统级优化、调校新思路。
In view of the interior booming noise problem of a front-engine rear-drive SUV during the development process,a full vehicle torsional vibration model is built in this paper,and the effectiveness of the torsional simulation model is verified by the results of transmission tests.Using the point attachment load between the transmission system and the body extracted from the full vehicle torsional vibration model to excite the full vehicle vibration noise response model,the acoustic amplitude of the vehicle response point is abtained,and then the effectiveness of finite element analysis results is verified by the in-vehicle noise test.Combining the simulation analysis of torsional vibration and the full vehicle vibration noise response model,a solution for flywheel parameters optimization is proposed.The results show that the interior booming noise is reduced by 2.8 dB(A)and the subjective feeling of passengers is improved.Finally the study provides a system optimization and tuning method for interior NVH problem caused by the transmission torsional vibration.
作者
纪浩
韦宝侣
韦进光
李小珊
符琳
JI Hao;WEI Bao-lv;WEI Jin-guang;LI Xiao-shan;FU Lin(Technical Center of SAIC-GM-Wuling Automobile Co.,Ltd,Liuzhou Guangxi 545000,China)
出处
《机械研究与应用》
2021年第4期93-96,共4页
Mechanical Research & Application
基金
广西创新驱动发展专项项目:前置后驱乘用车关键技术协同创新开发与应用(编号:2018AA18027)。
关键词
振动与波
扭振
虚拟仿真
轰鸣声
前置后驱
vibration and wave
torsional vibration
virtual simulation
booming noise
front engine rear drive
作者简介
纪浩(1987-),男,云南普洱人,中级工程师,硕士,研究方向:汽车噪声与振动控制。
