Passive damping of structural dynamics using piezoceramic electromechanical energy conversion and passive electrical networks is a relatively recent concept with little implementation experience base. This report describes an implementation case study, starting from conceptual design and technique selection, through detailed component design and testing to simulation on the structrure to be dam...

Abstract Parametric excitation in the pitch/roll degrees of freedom (DoFs) can induce dynamic instability floating cylinder-type structures such as spar buoys, offshore wind or wave energy converters. At certain frequency and amplitude ranges input waves, parametric coupling between heave DoFs results undesirable large rotational motion. One possible remedy to mitigate existence resonance is us...

In this paper, an optimization technique is presented for the design of piezoelectric buzzers. This design technique aims at finding the optimal configuration of the coupled cavity and diaphragm structure to maximize the sound pressure output. Instead of measuring the material constants of the piezoelectric ceramic and the metal diaphragm, an "added-mass method" is developed to estimate the equ...

This research investigates a concept for cut-out resonators that exploit small area of active mass host plate structure sake tuned, low frequency vibration attenuation. Integrated computational and experimental studies reveal embedding the at locations offering high bending moment gradient arranging central resonator beam along nodal line best excite first eigenmode targeted suppression. These ...