基于逆子结构分析方法的车门振动噪声分析  

Analysis of Vibration and Noise of Car Doors Based on Inverse Sub-structuring Method

作　　者：黄河 HUANG He(Department of Automotive Engineering,Hunan Polytechnic of Finance and Economics Industry,Hengyang 421002,Hunan,China)

机构地区：[1]湖南财经工业职业技术学院汽车工程系,湖南衡阳421002

出　　处：《噪声与振动控制》2022年第2期149-153,共5页Noise and Vibration Control

摘　　要：针对国内主机厂某款SUV以11 km/h~13 km/h的速度行驶在搓衣板路面时左后车门出现异常振动的现象进行分析。通过前期试验已确定引起车门异常振动的激励来源于搓衣板路面,借助逆子结构分析方法对从轮轴头到左后车门(目标响应点)振动传递路径进行分析。该方法优势在于在整车耦合系统条件下,通过试验测量可得到底盘系统和车身系统耦合界面动态参数与各子结构频响函数,从而求解出各轮轴头到接附点(车身侧为被动端)激励传递率以及各子系统非耦合状态下频响函数,从而实现振动传递路径贡献量分析,最终找出激励传递率较大的接附点。The abnormal vibration phenomenon of the left rear door of a type of domestic SUV driving on washboardlike pavement at the speed of 11 km/h-13 km/h is studied. The preliminary test shows that the abnormal shaking of the rear door is caused by the excitation of four tires rolling on the washboard-like pavement. The inverse sub-structuring method is introduced to analyze the vibration transmission path from the spindle head to the left rear door. The advantage of this method is that the dynamic parameters of the interface between chassis system and vehicle body system and the frequency response functions of substructures can be obtained in the whole car measurement test without decoupling the system. Then,the excitation transmissibility from each spindle head to the attachment point of the passive side and the non-coupling FRF of each substructure can be calculated. The contribution of vibration transmission path is further analyzed. Finally, the attachment point with higher excitation transmissibility is found.

关 键 词：振动与波 逆子结构分析方法 频率响应函数 激励传递率 传递路径 

分 类 号：U463[机械工程—车辆工程]