摘要
在Hypermesh中建立某挖掘机驾驶室结构有限元模型。完成设置后,导入Nastrain中进行结构模态分析。在Virtual.Lab中生成声学模型,并进行声模态分析。以驾驶员左右耳作为场点,分析计算声固耦合时,场点处的声学频率响应函数。针对声压峰值所对应的频率,作面板贡献量分析。根据分析结果,对驾驶室进行优化,并验证优化效果。
Finite element model of an excavator cab stnlcture was built by Hypermesh. Then, the structure modals were analyzed by Nastran. In the Virtual-lab, an acoustic model was generated and the acoustic modals were analyzed. Taking the driver＇s ears as the fat-field, the acoustic frequency response functions with the coupling effect of the acoustic chamber and structure were calculated. Panel＇ s contribution amounts to the corresponding frequency of the peak pressure were calculated. According to the results, the scheme of optimization was given, and the optimization effect was verified.
出处
《噪声与振动控制》
CSCD
2013年第6期87-90,共4页
Noise and Vibration Control
