Research on Frequency Characteristics of Spherical-Cymbal Transducers
A new type of cymbal-type transducer, called spherical-cymbni, has been developed to increase the frequency performances of traditional cymbal transducers. Spherical cymbal transducer consists of a piezoelectric ceramic disk (poled in the thickness direction) sandwiched between two spherical metal end-caps, each end-cap containing a shallow spherical inner cavity. A analytical model was developed to evaluate the resonance frequencies of sphericalcymbal transducers, and finite element analysis (FEA) is also used to calculate the resonance frequencies of sphericalcymbal transducers. The results show that the analytical model is reasonable when the cavity is shallow, it can be used to calculate the resonance frequencies of sphericalcymbal transducers. Under the same dimensions, the first resonance frequency of spherical-cymbal transducers is lower about 4.8-8.4％ than that of traditional cymbal transducers. The first resonance frequency of spherical-cymbai transducers can be easily tailored simply by changing the end-cap material or varying the end-cap dimensions. This capability gives spberical-cymbal transducers wider applications.
spherical-cymbal transducer frequency characteristics finite element analysis
Shilin Wu Qi Zhang Zhiping Huang Jiulong Xiong
Department of Instrument Science and Technology National University of Defense Technology Changsha,Hunan Province,China
国际会议
长沙
英文
514-518
2009-04-11（万方平台首次上网日期，不代表论文的发表时间）