波纹圆柱壳压电换能器的振动特性
Vibration characteristics of a corrugated cylindrical shell piezoelectric transducer.
作者信息
Xu Limei, Chen Min, Du Hualong, Hu Hongping, Hu Yuantai, Fan Hui, Yang Jiashi
机构信息
Institute of Astronautics and Aeronautics, University of Electronic Science and Technology, Chengdu, China.
出版信息
IEEE Trans Ultrason Ferroelectr Freq Control. 2008 Nov;55(11):2502-8. doi: 10.1109/TUFFC.958.
We study coupled extensional and flexural cylindrical vibrations of a corrugated cylindrical shell piezoelectric transducer consisting of multiple pieces of circular cylindrical surfaces smoothly connected along their generatrices. Using the classical shell theory, a theoretical solution is obtained. Based on the solution, basic vibration characteristics of resonant frequencies, mode shapes, and internal forces are calculated and examined for the corrugated transducers, consisting of a few circular pieces each about 50 mum thick, with radius of 5 mm and span angle of 120 degrees. For these transducers the first resonance is of the order of 10-100 Hz.
我们研究了一种波纹圆柱壳压电换能器的耦合拉伸和弯曲圆柱振动，该换能器由多个沿母线平滑连接的圆柱面组成。利用经典壳理论，得到了一个理论解。基于该解，计算并研究了由几个厚度约为50μm、半径为5mm、跨角为120度的圆形片组成的波纹换能器的共振频率、振型和内力等基本振动特性。对于这些换能器，第一共振频率在10 - 100Hz量级。
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