加筋圆柱壳结构振动与辐射噪声关系分析

采用传递函数法和声传递矢量(ATV)得到了加筋圆柱壳从结构测点加速度到声场测点声压的声辐射传递函数,以及结构测点加速度到辐射声功率之间的传递函数。通过对两个加筋圆柱壳结构的振动与辐射噪声关系的数值分析,讨论了结构测点加速度与辐射噪声之间的相互关系,结果表明结构测点加速度与辐射声功率和辐射声压之间并非单调关系。

Relationship Between Sound Radiation and Vibration from Stiffened Cylindrical Shell

This paper presents a study on the relationship between vibration and sound radiation from submerged cylindrical shell. This was done via a series of vibration sensors which were fitted on the stiffened cylindrical shell for estimating the vibration and radiated noise level.With the transfer function and acoustic transfer vector,the sound radiation transfer function was obtained through the acceleration of structure measurement points and the acoustic measurement points from the stiffened cylindrical shell. The numerical analysis of vibration and sound radiation from two stiffened cylindrical shells was carried out by these methods. The results show that the relationship between vibration and sound radiation of the shell are not monotonic.