摘要
利用周期性定理和傅里叶技术,得到双层耦合结构的振动能量及声辐射功率表达式。研究了双层耦合结构的振动与声辐射特性。当流体介质由空气变为水时,结构的振动峰谷值数目及声辐射功率均有所增加。结合工程实际,进一步讨论了敷设阻尼橡胶层对于结构的振动与声辐射特性的影响。结果表明,在未受激励板上敷设阻尼橡胶层后结构的振动与声辐射性能得到较好控制。
By applying the periodicity theory and Fourier Techniques,the vibration energy and radiation power formulations of the double-plate structures coupling with mechanical links are yielded.The vibration and radiation characteristics are studied.When the structure is surrounded by water instead of air,the number of peaks and dips of vibration energy increases obviously,and the radiation power increases accordingly.Based on the practical engineering application,the influence of the attached damping materials is investigated further.The results showed that the vibration and radiation can be well controlled by attaching the damping materials on the unexcited back plate.
出处
《压电与声光》
CSCD
北大核心
2010年第4期539-542,546,共5页
Piezoelectrics & Acoustooptics
关键词
双层耦合结构
机械连接杆
振动能量
声辐射功率
double-plate structures
mechanical links
vibration energy
radiation power
