Research Papers

Development of a Semi-Active Electromagnetic Vibration Absorber and Its Experimental Study

[+] Author and Article Information
Xueguang Liu

e-mail: xueguang_liu@hotmail.com

Zhijun Shuai

College of Power and Energy Engineering,
Harbin Engineering University,
Harbin 150001, China

1Corresponding author.

Contributed by the Design Engineering Division of ASME for publication in the Journal of Vibration and Acoustics. Manuscript received November 15, 2011; final manuscript received March 1, 2013; published online June 18, 2013. Assoc. Editor: Wei-Hsin Liao.

J. Vib. Acoust 135(5), 051015 (Jun 18, 2013) (9 pages) Paper No: VIB-11-1277; doi: 10.1115/1.4023952 History: Received November 15, 2011; Revised March 01, 2013

In this work, a semiactive electromagnetic vibration absorber has been developed based on a proposed electromagnetic stiffness adjustable spring model, which presents a new solution for adjusting stiffness in the field of vibration absorber devices. Simulation study on the electromagnetic spring has been performed to determine the structural parameter of the semiactive vibration absorber. An experimental rig is also built up to investigate its practical vibration control effectiveness. Firstly, the finite element model of the test bench is used to analyze its vibration characteristics. Then, the vibration reduction effect is predicted through the simulation analysis, from which the optimal control positions are found. Finally, the experimental studies are also conducted, and the results show that this semiactive electromagnetic vibration absorber has a frequency adjustment range from 21 Hz to 25 Hz, in which considerable vibration reduction from 5 dB to 10 dB can be achieved.

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Fig. 1

Schematic of single tooth operation characteristics

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Fig. 2

Calculation model of the designed electromagnetic dynamic vibration absorber

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Fig. 3

Distribution of magnetic field

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Fig. 4

Distribution of magnetic induction intensity B

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Fig. 5

Structure diagram of the electromagnetic semiactive vibration absorber

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Fig. 6

Photo of the electromagnetic semiactive vibration absorber

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Fig. 7

Comparison of stiffness from the simulation and experimental measurement

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Fig. 8

System diagram of the vibration absorbing experiments

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Fig. 9

Real photo of the test bench

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Fig. 10

Finite element model developed using ANSYS

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Fig. 11

Test bench mode shapes within the range of 21 Hz–25 Hz

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Fig. 12

Arrangement schemes of evaluation points, excitation point and vibration absorbing positions

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Fig. 13

Vibration levels of points 1 ∼ 20 at different frequencies and different vibration absorbing points

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Fig. 14

Vibration reduction of point 3 when vibration absorbers located at right and left sides of points 3 and 8

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Fig. 15

Schematic diagram of the experimental system

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Fig. 16

Physical photo of the real experimental system

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Fig. 17

Comparison of experimental and simulation results at different frequencies




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