AUTHORS: Shanker Ganesh Krishnamoorthy, Inga Skiedraite, Sylvester Sedem Djokoto, Egidijus Dragasius, Ramunas Skvireckas
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ABSTRACT: Piezo materials are widely used as dampers in smart systems due to their unique properties. Several research was developed to understand the damping process strategy in piezoelectric dampers, but by giving less consideration to the effect of directly shorting terminals between passive and active layers. This research work aims to study the influence of shorting terminals of passive and active layers at the time of resonance. Simple bimorph cantilever was used for the research study to illustrate the effectiveness of the proposed technique. The experiment setup consists of input unit (wave generator amplifier, and shaker), and output unit (optical sensor, vibrometer, picoscope, and computer). The PicoScope software was used to analyze the final result. The results show that the new approach has a positive effect, where the amplitude of vibration at resonance can be reduced up to 50 %.
KEYWORDS: Bimorph, piezoelectric damper, shunt damping, resonance damping, passive damping, active damping
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