Precise calculation of piezoelectric switching techniques for vibration damping

Marcus Neubauer; Jörg Wallaschek

doi:10.1117/12.815809

6 April 2009 Precise calculation of piezoelectric switching techniques for vibration damping

Marcus Neubauer, Jörg Wallaschek

Proceedings Volume 7288, Active and Passive Smart Structures and Integrated Systems 2009; 72881I (2009) https://doi.org/10.1117/12.815809
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2009, San Diego, California, United States

Abstract

Piezoelectric shunt damping is new technique to damp mechanical vibrations of structures. Because of the piezoelectric effect, vibration energy is converted into electrical energy. In the attached network some part of the energy is dissipated. Switching shunts offer the possibility to adapt to varying excitation frequencies. In this paper, the damping performance of different switching techniques are calculated considering all important network parameters and non-idealities in the switching boards. Measurements on a clamped beam are performed to validate the results, and the switching techniques are applied to a squealing disc brake. It is shown that due to the piezoelectric shunt damping the sound pressure level can be reduced considerably.

Citation Download Citation

Marcus Neubauer and Jörg Wallaschek "Precise calculation of piezoelectric switching techniques for vibration damping", Proc. SPIE 7288, Active and Passive Smart Structures and Integrated Systems 2009, 72881I (6 April 2009); https://doi.org/10.1117/12.815809

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