摘要
建立了含门窗的车身结构有限元模型、车内声场有限元模型及结构一声场耦合模型，进行了车内耦合声场预测。建立了车内声场声压灵敏度分析模型，研究了声场边界导纳和壁板振动速度的声压灵敏度，并根据分析结果优化了关键板件的加强筋和厚度，优化后车内声压主要峰值降低2～3dB（A）。
A finite element model for the car body including doors and windows, a finite element model for the car interior acoustic field, and a coupled structure-acoustic model were built and the car interior coupled acoustic field was predicted. A sensitivity analysis model was built for the car interior acoustic field, and the acoustic pressure sensctivities of the admittance of the acoustic field boundary and the board vibration velocity were studied. According to the sensitivity analysis results, the ribs and the thickness of the key boards were optimized, leading to reduction of the main peak values of the car interior acoustic pressure level by 2-3 dB（A）.
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2009年第5期1130-1136,共7页
Journal of Jilin University:Engineering and Technology Edition
基金
'863'国家高技术研究发展计划项目(2006AA110102)
关键词
车辆工程
车内耦合声场
灵敏度分析
导纳
振动速度
vehicle engineering
interior coupled acoustic field
sensitivity analysis
admittance
vibration velocity
