Parametric Vibration Stability of Controlled Stay Cables With Time Delays

PENG Jian; LI Lu-xin; HU Xia; WANG Xiu-yong

doi:10.21656/1000-0887.370110

Volume 38 Issue 2

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Article Navigation > Applied Mathematics and Mechanics > 2017 > 38(2): 181-188

PENG Jian, LI Lu-xin, HU Xia, WANG Xiu-yong. Parametric Vibration Stability of Controlled Stay Cables With Time Delays[J]. Applied Mathematics and Mechanics, 2017, 38(2): 181-188. doi: 10.21656/1000-0887.370110

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Parametric Vibration Stability of Controlled Stay Cables With Time Delays

doi: 10.21656/1000-0887.370110

School of Civil Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, P.R.China

Funds: The National Natural Science Foundation of China(11402085)； The National Basic Research Program of China(973 Program)(2015CB057702)

Received Date: 2016-04-21
Rev Recd Date: 2016-05-20
Publish Date: 2017-02-15

Abstract

Abstract

The effects of time delays on the primary parametric vibration of controlled stay cables under axial excitation were studied. In view of cable sag and geometric nonlinearity, the nonlinear parametric vibration equation for the controlled stay cable system under axial excitation was built based on the Hamiltonian principle. Then the dynamic system with time delay was formulated by means of the Galerkin method. The multiscale method was used to analyze the primary parametric resonance of the controlled stay cable system and obtain the effects of different time delays and control gains on the time histories of the parametric vibration and the stability region of the controlled stay cable. The study shows that time delay weakens the vibration controlling effects on the stay cable, and the stability region of the parametric vibration is shifted. The larger the time delay is, the worse the controlling effects will be. The work plays a guiding role in the parametric design of the control system for stay cables.
- parametric vibration,
- stay cable,
- time delay,
- stability

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References(17)

References

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