An autonomous shunt circuit for vibration damping

The tuning of a simplified current blocking shunt circuit able to mitigate the vibration amplitude of multiple structural resonances is addressed in this article. The proposed strategy exploits the two-port network formalism in combination with physically motivated approximations to tune sequentially the electrical elements of the different branches of the shunt circuit. The resulting tuning method does not resort to optimization algorithms and requires only the knowledge of quantities that are easy to measure experimentally. It is demonstrated both numerically and experimentally using a piezoelectric beam.

Download Full-text

Vibration damping

AccessScience ◽

10.1036/1097-8542.731300 ◽

2015 ◽

Keyword(s):

Vibration Damping

Download Full-text

Computational comparison of efficacies of aeolian vibration damping devices for multiconductor overhead power lines

IEE Proceedings C Generation Transmission and Distribution ◽

10.1049/ip-c.1990.0030 ◽

1990 ◽

Vol 137 (3) ◽

pp. 225 ◽

Cited By ~ 1

Author(s):

A. Simpson ◽

N.J. Salmon ◽

C.N. Taylor

Keyword(s):

Vibration Damping ◽

Power Lines ◽

Aeolian Vibration ◽

Overhead Power Lines ◽

Computational Comparison

Download Full-text

An hourglass-type electromagnetic isolator with negative resistance electromagnetic shunt circuit

International Journal of Applied Electromagnetics and Mechanics ◽

10.3233/jae-209363 ◽

2020 ◽

Vol 64 (1-4) ◽

pp. 549-556

Author(s):

Yajun Luo ◽

Linwei Ji ◽

Yahong Zhang ◽

Minglong Xu ◽

Xinong Zhang

Keyword(s):

Vibration Isolation ◽

Electromechanical Coupling ◽

Coupling Effect ◽

Negative Resistance ◽

Isolation System ◽

Amplitude Vibration ◽

Vibration Responses ◽

The Stability ◽

Isolation Performance ◽

Shunt Circuit

The present work proposed an hourglass-type electromagnetic isolator with negative resistance (NR) shunt circuit to achieve the effective suppression of the micro-amplitude vibration response in various advanced instruments and equipment. By innovatively design of combining the displacement amplifier and the NR electromagnetic shunt circuit, the current new type of vibration isolator not only can effectively solve the problem of micro-amplitude vibration control, but also has significant electromechanical coupling effect, to obtain excellent vibration isolation performance. The design of the isolator and motion relationship is presented firstly. The electromechanical coupling dynamic model of the isolator is also given. Moreover, the optimal design of the NR electromagnetic shunt circuit and the stability analysis of the vibration isolation system are carried out. Finally, the simulation results about the transfer function and vibration responses demonstrated that the isolator has a significant isolation performance.

Download Full-text