摘要
建立了燃料电池轿车声固耦合有限元模型,以氢泵和驱动电机的振动加速度频谱为边界条件对模型进行了车内噪声声固耦合频率响应分析,峰值频率值与实验值吻合较好;在其中2个峰值频率上进行板件声学贡献分析,确定了影响车内噪声最主要的板件;通过对该板件的优化改造,降低了车内噪声。
The acoustic-structure coupled finite element model with several subsystems is built. With the boundary conditions of hydric pump and electric motor vibration spectrum, the frequency response analysis is calculated and the peak frequency is inosculated with the measured value. After the panel contribution analysis of the coupled model is calculated, the part which has great effect on the low frequency interior noise is found out. After its panel parameter optimization and structure refinement, the interior noise is reduced.
出处
《山东交通学院学报》
CAS
2008年第1期1-6,共6页
Journal of Shandong Jiaotong University
基金
国家863计划电动汽车重大专项资助项目(2006AA11A101)
2005年度曙光计划项目资助(05SG22)
关键词
燃料电池轿车
车内噪声
声固耦合模型
频率响应
板件声学贡献
fuel cell vehicle
interior noise
acoustic-structure coupled model
frequency response
panel contribution of acoustics
作者简介
冯青（1981-），男，上海人，同济大学硕士研究生，研究方向为汽车振动与噪声．
