穿孔板振动的实验研究

Experimental studies on the vibration of perforated sheet

本文测量了穿孔率从0.008到0.30的穿孔板的共振频率,将此共振频率与未穿孔的相同板的共振频率比较,求得穿孔板的共振频率与穿孔率之间的关系。本文也对穿孔板的阻尼因数作了初步测量。

In the experiment we have measured the resonant frequencies of perforated sheets with perforation rates from 0.008 to 0.30. After comparing those frequencies with the corresponding resonant frequencies of un-perforated one, we obtained an empirical relation between the resonant frequency and pertoration rate of perforated sheet which can be used for industrial purpose. We have also studied the change of vibration energy distribution of perforated sheet.