This paper addresses the vibration attenuation provided by the resonant piezoelectric shunt enhanced by means of negative capacitances. The shunt impedance is composed by one or two negative capacitances, a resistance and an inductance. It is shown that closed analytical formulations, common to all the possible connections of the negative capacitan...
peer reviewed / It has been shown that shunting electromagnetic devices with electrical networks can be used to damp vibrations. These absorbers have however limitations that restrict the control performance, i.e., the total damping of the system and robustness versus parameter variations. On the other hand, the electromagnetic devices are widely u...
Les travaux sur les matériaux piézoélectriques (qui peuvent transformer l’énergie électrique en énergie mécanique et inversement) utilisés afin de contrôler ou récupérer l’énergie de structures principales, sont nombreux. Dans un premier temps, on a supposé qu’ils ne possédaient qu’un comportement linéaire, avant que la prise en compte de leurs non...
Published in Journal of Mechanical Science and Technology
Stay cables of cable-stayed bridges are connected by cross-ties to form a cable network, or the slings of the same suspension points on a suspension bridge are connected by vibration absorbers to form a sling network. As a result, the cable network’s in-plane free vibration characteristics are different from independent, single cables. However, sta...
Published in SN Applied Sciences
Fractional-order derivatives and integrals have gained serious attention by the researchers in past few decades. It has been observed that fractional calculus is more suitable in modeling real life systems. In this paper, Fractional-Order PID (FOPID) controller is studied to suppress the vibration of cantilever beam modeled by Euler–Bernoulli model...
Robust control of a lightly-damped system, such as the mechanical structure of a spacecraft, is a dilemma for control engineers. The shaker's table used for satellite vibration tests for qualification uses a sine sweep acceleration signal to characterize the satellite's frequency signature. The current control system presents strong oscillation whi...
In this study, we address the reduction of structural vibrations by means of an electromagnetic shunt damper (EMSD) combined with a mechanical dynamic vibration absorber (DVA). Two architectures, that differs in the placement of the EMSD with respect to the DVA, are tested, showing that one of them enhances the vibration control. In parallel, three...
In this study, we address the reduction of structural vibrations by means of an electromagnetic shunt damper (EMSD) combined with a mechanical dynamic vibration absorber (DVA). Two architectures, that differs in the placement of the EMSD with respect to the DVA, are tested, showing that one of them enhances the vibration control. In parallel, three...
Published in International journal of industrial ergonomics
The objective of this study is to identify effective engineering methods for controlling handheld workpiece vibration during grinding processes. Prolonged and intensive exposures to such vibration can cause hand-arm vibration syndrome among workers performing workpiece grinding, but how to effectively control these exposures remains an important is...
This research proposes a new kind of piezoelectric metamaterials with nonlinear SSDI (Synchronized Switching Damping on Inductor) Dual-connected electronic networks, which provides a new electrical medium coupled with the piezoelectric beam metamaterial for elastic wave manipulation and vibration control. Specifically, the proposed topology conside...
