The inevitable manufacturing errors of rotational machineries cause vibration of multifrequency. This paper presents a multidynamic vibration absorber (MDVA) to suppress the vibration of multifrequency. The MDVA consists of two parts, and each part includes three dynamic vibration absorbers (DVAs) with equal mass but different stiffness values. In order to improve the robustness of the system, an optimization method to obtain the optimal damping values of each DVA is proposed based on dynamic response. The objective function of optimization aims to flatten the frequency response of the primary system with the changeable excitation and reduce the vibration level in a limited frequency bandwidth. The multifrequency vibration suppression is experimentally verified. To achieve the optimal damping values, the magnetic dampers are applied in the tests. The experimental results indicate that the sensitivity of the system is reduced and the robustness of the system is enhanced, which are coincident with the simulations.
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June 2017
Research-Article
Optimal Design and Experimental Study of a Multidynamic Vibration Absorber for Multifrequency Excitation
Xi Wang,
Xi Wang
Institute of Vibration, Shock and Noise,
State Key Laboratory of Mechanical System
and Vibration,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: wangxi028@foxmail.com
State Key Laboratory of Mechanical System
and Vibration,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: wangxi028@foxmail.com
Search for other works by this author on:
Bintang Yang,
Bintang Yang
Institute of Vibration, Shock and Noise,
State Key Laboratory of Mechanical System
and Vibration,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: btyang@sjtu.edu.cn
State Key Laboratory of Mechanical System
and Vibration,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: btyang@sjtu.edu.cn
Search for other works by this author on:
Hu Yu
Hu Yu
Institute of Vibration, Shock and Noise,
State Key Laboratory of Mechanical System
and Vibration,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: sj.yuhu@sjtu.edu.cn
State Key Laboratory of Mechanical System
and Vibration,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: sj.yuhu@sjtu.edu.cn
Search for other works by this author on:
Xi Wang
Institute of Vibration, Shock and Noise,
State Key Laboratory of Mechanical System
and Vibration,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: wangxi028@foxmail.com
State Key Laboratory of Mechanical System
and Vibration,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: wangxi028@foxmail.com
Bintang Yang
Institute of Vibration, Shock and Noise,
State Key Laboratory of Mechanical System
and Vibration,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: btyang@sjtu.edu.cn
State Key Laboratory of Mechanical System
and Vibration,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: btyang@sjtu.edu.cn
Hu Yu
Institute of Vibration, Shock and Noise,
State Key Laboratory of Mechanical System
and Vibration,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: sj.yuhu@sjtu.edu.cn
State Key Laboratory of Mechanical System
and Vibration,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: sj.yuhu@sjtu.edu.cn
1Corresponding author.
Contributed by the Technical Committee on Vibration and Sound of ASME for publication in the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received June 20, 2016; final manuscript received January 6, 2017; published online April 24, 2017. Assoc. Editor: John Judge.
J. Vib. Acoust. Jun 2017, 139(3): 031011 (7 pages)
Published Online: April 24, 2017
Article history
Received:
June 20, 2016
Revised:
January 6, 2017
Citation
Wang, X., Yang, B., and Yu, H. (April 24, 2017). "Optimal Design and Experimental Study of a Multidynamic Vibration Absorber for Multifrequency Excitation." ASME. J. Vib. Acoust. June 2017; 139(3): 031011. https://doi.org/10.1115/1.4035781
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