Finite element analysis of multimode passive piezoelectric damping tuned by using electrical impedance

Jaehwan Kim; Manfred Kaltenbacher; Reinhard Simkovics; Reinhard Lerch

doi:10.1117/12.436481

21 August 2001 Finite element analysis of passive piezoelectric damping tuned by using electrical impedance

Jaehwan Kim, Manfred Kaltenbacher, Reinhard Simkovics, Reinhard Lerch

Proceedings Volume 4326, Smart Structures and Materials 2001: Modeling, Signal Processing, and Control in Smart Structures; (2001) https://doi.org/10.1117/12.436481
Event: SPIE's 8th Annual International Symposium on Smart Structures and Materials, 2001, Newport Beach, CA, United States

Abstract

Possibility of passive piezoelectric damping based on a new shunting parameter estimation method is studied using finite element analysis. Piezoelectric device with shunt electronic elements, for example, inductor and resistor, are normally used for passive piezoelectric damping to achieve damping near resonance of the target structure. The key in implementation of such an electronic damping is to tune the shunt parameters accurately. The adopted tuning method is based electrical impedance that is found at piezoelectric device and the optimal criterion for maximizing dissipated energy at the shunt circuit. Full three dimensional finite element model is used for piezoelectric devices with cantilever plate structure and shunt electronic circuit is taken into account in the model. Electrical impedance is calculated at the piezoelectric device, which represents the structural behavior in terms of electrical field, and equivalent electrical circuit parameters for the first mode are extracted using PRAP(Piezoelectric Resonance Analysis Program). After the shunt circuit is connected to the equivalent circuit for the first mode, the shunt parameters are optimally decided based on the maximizing dissipated energy criterion. A cantilever beam example is taken to demonstrate the piezoelectric damping in the finite element simulation. Less than 10 dB vibration reduction at the tip of the beam is achieved by the piezoelectric damping. When the electrical potential at the shunted electrode is simulated nearly 80 Volt was found at the first resonance frequency. The dissipated electrical power ratio with respect to the mechanical input power is calculated from this electrical voltage, and it was found to be 0.39, which is close to the energy ratio found from the electromechanical coupling coefficient of the piezoelectric patch. Since this tuning method is based on electrical impedance calculated at piezoelectric device, multi-mode passive piezoelectric damping can be implemented for arbitrary shaped structures.

Citation Download Citation

Jaehwan Kim, Manfred Kaltenbacher, Reinhard Simkovics, and Reinhard Lerch "Finite element analysis of passive piezoelectric damping tuned by using electrical impedance", Proc. SPIE 4326, Smart Structures and Materials 2001: Modeling, Signal Processing, and Control in Smart Structures, (21 August 2001); https://doi.org/10.1117/12.436481

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available