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Research Papers

Study on the Iced Quad-Bundle Transmission Lines Incorporated With Viscoelastic Antigalloping Devices

[+] Author and Article Information
Zhao-Dong Xu

Professor
Key Laboratory of C&PC Structures
of the Ministry of Education,
Civil Engineering School,
Southeast University,
Nanjing 210096, China
e-mail: xuzhdgyq@seu.edu.cn

Ling-Zhi Xu

Wuxi Civil Architectural Design Institute Co. Ltd.,
Wuxi 214400, China
e-mail: xulingzhi301@126.com

Fei-Hong Xu

Key Laboratory of C&PC Structures
of the Ministry of Education,
Southeast University,
Nanjing 210096, China
e-mail: xufeihong666@163.com

1Corresponding author.

Contributed by the Dynamic Systems Division of ASME for publication in the JOURNAL OF Dynamic Systems, Measurement, and Control. Manuscript received June 5, 2014; final manuscript received October 14, 2014; published online January 27, 2015. Assoc. Editor: Fu-Cheng Wang.

J. Dyn. Sys., Meas., Control 137(6), 061009 (Jun 01, 2015) (11 pages) Paper No: DS-14-1245; doi: 10.1115/1.4028888 History: Received June 05, 2014; Revised October 14, 2014; Online January 27, 2015

The viscoelastic damper is one of the most promising devices for vibration mitigation. In order to reduce dynamic responses of iced transmission lines due to strong wind, a new kind of viscoelastic antigalloping device (VEAGD) is developed. Experimental and theoretical studies indicate that the device has fine energy dissipation capacity and high damping characteristic. Then, the motion equations of the iced quad-bundle transmission lines incorporated with VEAGDs are established by employing Lagrange equation based on the assumed mode method. At the same time, the parameters and positions of the VEAGDs are determined optimally by the genetic algorithm. Numerical analysis results show that VEAGDs have excellent antigalloping effect, and the dynamic responses of the transmission lines with optimally designed VEAGDs are mitigated more effectively.

Copyright © 2015 by ASME
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References

Figures

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Fig. 5

Force–displacement hysteresis curve

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Fig. 4

The hysteresis curves at the same displacement with different frequencies

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Fig. 3

The hysteresis curves at the same frequency with different displacements

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Fig. 2

Property tests on the VEAGD

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Fig. 1

Construction of the VEAGD

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Fig. 6

Characteristic parameters change with excitation frequency

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Kelvin model and fractional Kelvin model

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Fig. 9

Experimental and numerical results comparison

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Fig. 10

Equivalent single transmission line model

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Fig. 11

Locations of points simulating time-history wind speed

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Fig. 12

Time-history of wind speed

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Fig. 14

Iterative process of genetic algorithm

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Fig. 7

Characteristic parameters change with amplitude

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Fig. 15

Comparison of the responses between uncontrolled and optimal controlled transmission lines

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Fig. 16

Comparison of the responses between suboptimal controlled and optimal controlled transmission lines

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Fig. 13

Comparison of the responses of the transmission lines

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