中北大学学报（自然科学版）2016，Vol.37Issue(5)：487-493,7.DOI:10.3969/j.issn.1673-3193.2016.05.010
SUV车身NVH特性频率响应分析
Analysis on NVH Characteristic Frequency Response of SUV Body
摘要
Abstract
NVH characteristics of the body is the key to influence ride comfort.Based on the vibration a-coustic theory,by using of the frequency response method,the vibration sensitivity and the acoustic sensitivity of the vehicle body were studied.The acoustic mode and noise transfer function were com-pared before and after increasing the interior space of 20 mm.Through the analysis,the results identify the j oinpoints with higher response peak value.The modal frequency and vibration mode are basically the same and the acoustic pressure of some optimized joinpoints are better.The results show that the rear susp-spring-LH vibration sensitivity and the exhaust-2 acoustic sensitivity are higher.The scheme of increasing 20 mm interior space in the car is feasible.It offers an important basis for the research of NVH characteristics and optimization of body structure design of SUV body.关键词
SUV/频率响应/振动灵敏度/声学灵敏度Key words
SUV/frequency response/vibration sensitivity/acoustic sensitivity分类
交通工程引用本文复制引用
胡雪芳,刘浩,吕婧,刘超..SUV车身NVH特性频率响应分析[J].中北大学学报（自然科学版）,2016,37(5):487-493,7.基金项目
校企合作项目 （）
