摘要
以某SUV车为例,建立了车身及乘客室声腔的有限元模型。采用模态分析法,根据轿车车身结构和乘客室的声固耦合效应,通过模态分析得到车身结构和室内声腔的各阶耦合振动模式,通过声压响应分析得到车内噪声级别,通过结构灵敏度分析识别出车内噪声的主要来源。针对噪声源提出的改进措施有效降低了车内噪声。
A SUV auto-body noise, vibration, and harshness （NVH） structure sensitivity was analysed, considering the structure- acoustic coupling based on the modal analysis method. The structure and acoustic vibration mode were gained from coupling analysis while inner noise level from frequency analysis. The given methods reduce noise by identifying the main source to the noise through structure sensitivity analysis.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2008年第3期361-364,共4页
China Mechanical Engineering
关键词
轿车车身
模态分析法
耦合分析
结构灵敏度分析
auto- body
modal analysis method
coupling analysis
structure sensitivity analysis
