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Modelling and Simulation in Engineering
Volume 2011, Article ID 910876, 6 pages
http://dx.doi.org/10.1155/2011/910876
Research Article

A Novel Drive Option for Piezoelectric Ultrasonic Transducers

1Institute of Mechanics, Otto-von-Guericke University Magdeburg, Universitaetsplatz 2, 39106 Magdeburg, Germany
2Division of Instruments, Sirona Dental Systems GmbH, Fabrikstrasse 31, 64625 Bensheim, Germany

Received 4 March 2011; Accepted 17 May 2011

Academic Editor: Jing-Song Hong

Copyright © 2011 Diana Engelke et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper concentrates on ultrasonic transducers, which are driven by piezoelectric ceramic rings that are arranged in a stack. A novel drive option, where the stack contains a new type of divided piezoelectric rings, is analyzed using the finite element method, prototyped, and tested. To gain a better sense of the vibration behavior, the studies focus initially on one ring and subsequently on the different possibilities to assemble the transducer. The investigations point out that natural bending frequencies can be excited at the transducer. Thus, multiple vibration directions of the tip can be controlled, what can be advantageous for instance in dental applications.