摘要
在耦合振动理论以及矩形截面细棒弯曲振动的基础上,本文对矩形薄板的弯曲振动进行了研究,推出了自由边界矩形薄板的弯曲振动频率方程,研究了薄板的振动模式及其与共振频率的关系.实验表明,矩形薄板弯曲振动共振频率的测量值与计算值符合很好.用共振式矩形薄板作为超声清洗等液体中超声应用技术的声波辐射器具有声场分布均匀,换能器频率调节容易,声波辐射面大等优点,是一种很有前途的新型超声源.
Based on the theory of coupled vibration and flexural vibration of a long thin bar with rectangular cross section, we studied the flexural vibration of rectangular plates, derived out the frequency equation when the boundaries of plates are free, studied the relation between resonant frequencies and vibrating modes. Experiments show that the measured results of resonant frequencies agree well with their calculated results, the ultrasonic cleaning tank with the rectangular plate of flexural vibration as ultrasonic radiators has the advantages of uniform acoustic field, large acoustic radiating surface and easy adjustment of exciting frequencies over traditional ultrasonic cleaning tank, the rectangular plate of flexural vibration proves to be a promising high power ultrasonic radiating source.
出处
《声学学报》
EI
CSCD
北大核心
1993年第3期223-230,共8页
Acta Acustica
