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Appl. Sci. 2017, 7(9), 895; doi:10.3390/app7090895

Experimental Study on Robustness of an Eddy Current-Tuned Mass Damper

1
Key Laboratory for Metallurgical Equipment and Control of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China
2
Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
3
Smart Materials and Structures Laboratory, Department of Mechanical Engineering, University of Houston, Houston, TX 77204, USA
4
Key Laboratory for Bridge and Wind Engineering of Hunan Province, College of Civil Engineering, Hunan University, Changsha 410082, China
*
Authors to whom correspondence should be addressed.
Received: 3 August 2017 / Revised: 25 August 2017 / Accepted: 28 August 2017 / Published: 1 September 2017
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Abstract

In this paper, an eddy current tuned mass damper (ECTMD) is utilized to control the vibration of a cantilever beam. The robustness of the ECTMD against frequency detuning is experimentally studied in cases of both free vibration and forced vibration. The natural frequency of the cantilever beam can be adjusted by changing the location of a lumped mass. For purposes of comparison with the ECTMD, the robustness of a tuned mass damper (TMD) is also studied. The experimental results in the free vibration case indicate that the ECTMD works well both in tuned and detuned situations, and the equivalent damping ratio of the cantilever beam equipped with the ECTMD is 2.08~5.91 times that of the TMD. However, the TMD only suppresses the free vibration effectively in the tuned situation. With forced vibration, the experimental results also demonstrate the robustness of the ECTMD in vibration suppression in detuned cases. On the other hand, the cantilever beam with TMD experiences 1.63~2.99 times the peak vibration of that of the ECTMD control. View Full-Text
Keywords: eddy current tuned mass damper (ECTMD); tuned mass damper (TMD); vibration control; frequency detuning; robustness eddy current tuned mass damper (ECTMD); tuned mass damper (TMD); vibration control; frequency detuning; robustness
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Chen, J.; Lu, G.; Li, Y.; Wang, T.; Wang, W.; Song, G. Experimental Study on Robustness of an Eddy Current-Tuned Mass Damper. Appl. Sci. 2017, 7, 895.

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