Vibration damping with shunted piezoceramics: Fundamentals and technical applications

Abstract This paper describes the damping performance of shunted piezoceramics for passive LR-networks, negative capacitance shunts (LRC) and the SSDI-switching technique. The calculations are based on a general description for mechanical structures with piezoelectric elements. Normalized parameters are introduced and the damping performance described by the generalized electromechanical coupling coefficient. For every electrical shunting the optimal network parameters are determined and the resulting maximum damping is compared. Additionally, a squealing disc brake and a bladed disc model are studied as technical applications. Practical realizations for the inclusion of the piezoelements and measurements are presented which validate the calculated damping performance. In particular, it is shown that the shunted piezoceramics are capable to suppress the brake squealing.

[1]  Karl Popp,et al.  Comparison of Damping Performance of Tuned Mass Dampers and Shunted Piezo Elements , 2005 .

[2]  J. Szwedowicz.  Cyclic Finite Element Modeling of Shrouded Turbine Blades Including Frictional Contacts , 1999 .

[3]  Robert L. Forward,et al.  Electronic damping of vibrations in optical structures. , 1979, Applied optics.

[4]  Vitalijus Volkovas.  Built-In Inspection Using Mechanical Energy Converting Elements , 2003 .

[5]  Walter Sextro,et al.  The Calculation of the Forced Response of Shrouded Blades with Friction Contacts and Its Experimental Verification , 2000 .

[6]  S. O. Reza Moheimani,et al.  Piezoelectric Transducers for Vibration Control and Damping , 2006 .

[7]  Peter Hagedorn,et al.  Active Control of Brake Squeal Via “Smart Pads” , 2004 .

[8]  Kenneth A. Cunefare,et al.  EXPERIMENTAL ACTIVE CONTROL OF AUTOMOTIVE DISC BRAKE ROTOR SQUEAL USING DITHER , 2002 .

[9]  Manfred Morari,et al.  An autonomous shunt circuit for vibration damping , 2006 .

[10]  K. W. Wang,et al.  Active-passive hybrid piezoelectric networks for vibration control: comparisons and improvement , 2001 .

[11]  Jörg Wallaschek,et al.  Active and semiactive vibration damping of turbine blades with piezoceramics , 2009, Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[12]  Jörg Wallaschek,et al.  Precise calculation of piezoelectric switching techniques for vibration damping , 2009, Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[13]  William W. Clark,et al.  Energy Dissipation Analysis of Piezoceramic Semi-Active Vibration Control , 2001 .