摘要
本文旨在整车制造完成之前,提前预测关门时车内噪声。首先,将车门关闭瞬间受到的瞬态冲击载荷进行了离散化,进行整车和台架试验,利用传递路径分析(transfer path analysis,TPA)方法求取离散化的载荷。接着,建立了车门的有限元模型,将求取的离散化载荷作为车门有限元模型的输入量。最后,建立了车内辐射噪声的时域边界元模型,将车门的瞬态有限元振动响应映射到时域边界元,以预测车内噪声。结果表明,仿真数据与试验结果一致性较好,验证了通过车门关闭瞬态载荷的离散化和声固耦合分析来预测关门时车内噪声的可行性。
This paper aims to predict in advance the interior noise of vehicle at the moment of door closing before its completion of manufacturing.Firstly,the transient impact load on the vehicle door during door closing is discretized,the field and bench tests are conducted,and the discretized loads are calculated by transfer path analysis(TPA)method.Then,the finite element model of vehicle door is established,and the discretized loads obtained are used as the input of the finite element model of vehicle door.Finally,the time domain boundary element model of the interior radiated noise is established,and the transient finite element vibration response of vehicle door is mapped to the boundary element in time domain to predict the interior noise of the vehicle.The results show that the simulation data well agree with the test results,verifying the feasibility of predicting the noise inside the vehicle during door closing by discretizing transient load of door closing and acoustic-structure coupling analysis.
作者
刘哲
高云凯
徐翔
陈佳举
马超
Liu Zhe;Gao Yunkai;Xu Xiang;Chen Jiaju;Ma Chao(School of Automotive Studies,Tongji University,Shanghai 201804)
出处
《汽车工程》
EI
CSCD
北大核心
2021年第6期909-916,共8页
Automotive Engineering
基金
国家自然科学基金(51575399)
国家重点研发计划(2016YFB0101602)
电控底盘系统开发与主动控制技术研究(20511104601)资助。
关键词
车辆工程
车内噪声
有限元法
边界元法
vehicle engineering
vehicle interior noise
finite element method
boundary element method
