Attenuation of micro-vibrations by varying the resonance extremity of a transitional composite structure

Abstract

Micro-vibrations, corresponding to a low amplitude disturbance of less than 1 kHz, become a concern when the transitional structures have a flat damping property and affect the performance of the apparatus that stipulates precision. There has been a plethora of research on micro-vibration attenuation using a complex design and advanced control technology that assures an approximate percent attenuation of micro-vibrations. However, these designs are intricate and require different modules to work in parallel to achieve the best result. Thus, the dependency of these designs increases in the long run. There are areas wherein Byzantine designs and controls are not necessary, but clamors flutter mitigation, for the better performance of a mechanical system. Therefore, this article addresses the general principle of piezoelectric vibration attenuation devices and proposes a new hypothesis to attenuate micro-vibration by shifting the resonance extremity of a transitional structure. The current article contains the problem analysis, theoretical investigation of a composite trimorph bender, experimental setups, and a detailed discussion of the results. The contemporary research results show that 50% of alleviation in flutters was achieved through unmediated shunting of active and passive layers as well as the absence of external shunt circuits used for energy dissipation or actuation.