Finite Element Analysis of a Piezoelectric Acoustic Levitator

被引：1
|
作者：
Andrade, Marco A. B. [1 ]
Buiochi, Flavio [1 ]
Adamowski, Julio C. [1 ]
机构：
[1] Univ Sao Paulo, Dept Mechatron Engn, Escola Politecn, Sao Paulo, Brazil
来源：
2008 IEEE ULTRASONICS SYMPOSIUM, VOLS 1-4 AND APPENDIX | 2008年
关键词：
Finite Element Analysis; acoustic levitation; piezoelectric transducer;
D O I：
10.1109/ULTSYM.2008.0343
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
This work describes the finite element analysis of a piezoelectric acoustic levitator. The acoustic levitator consists of a Langevin transducer and a steel reflector. The finite element method is used to determine the electrical impedance, the transducer face displacement and the acoustic radiation potential that acts on a small sphere. The numerical electrical impedance is compared with that obtained experimentally by an impedance analyzer and the numerical displacement is compared with that obtained by a fiber-optic vibration sensor. The levitator was used to levitate small Styrofoam spheres. The positions of the spheres show good agreement with the positions of minimum acoustic radiation potential.
引用
收藏
页码：1413 / 1416
页数：4
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