Determination of piezoelectric transducer damping by using experimental and finite element simulations

Gilder Nader; Emilio C. N. Silva; Julio Cesar Adamowski

doi:10.1117/12.483962

31 July 2003 Determination of piezoelectric transducer damping by using experimental and finite element simulations

Gilder Nader, Emilio C. N. Silva, Julio Cesar Adamowski

Proceedings Volume 5052, Smart Structures and Materials 2003: Damping and Isolation; (2003) https://doi.org/10.1117/12.483962
Event: Smart Structures and Materials, 2003, San Diego, California, United States

Abstract

The study of piezoceramic and piezoelectric transducers behavior by finite element method (FEM) shows an important influence of viscous damping. Damping values for piezoceramic materials are not provided by manufacturers. In addition, damping values for non-piezoelectrics materials, such as, resins, steel, aluminum, etc, which are usually applied to assemble these transducers are not appropriately given for FEM simulations. Therefore, the objective of this work is to determine damping values of these materials so they can be used in a FEM software, such as, the ANSYS, which has four different ways for damping input. Damping values are determined by combining experimental and numerical techniques. For piezoceramics the damping is determined through the quality factor (Qm) by measuring the admittance curve which are influenced by damping. By using these damping values, harmonic and transient FEM simulations of piezoceramics and piezoelectric transducers are performed and the simulated admittance curve is compared with the measured one, as well as, displacement results are compared with laser interferometer measurements. Damping determination for non-piezoelectric materials are done by comparing experimental and simulated results. By using the obtained damping values, experimental measurements and simulated results for different piezoelectric transducers show a very good agreement.

Citation Download Citation

Gilder Nader, Emilio C. N. Silva, and Julio Cesar Adamowski "Determination of piezoelectric transducer damping by using experimental and finite element simulations", Proc. SPIE 5052, Smart Structures and Materials 2003: Damping and Isolation, (31 July 2003); https://doi.org/10.1117/12.483962

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