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

页码：1413 / 1416

页数：4

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