Control of Wind-Induced Response of Transmission Tower-Line System by Using Magnetorheological Dampers

Chen, Bo; Jin, Zheng; Qu, Weilian

doi:10.1142/s0219455409003235

Cited by 49 publications

(25 citation statements)

References 16 publications

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“…Numerical results showed that the vibrational response was reduced by 17% with optimal design. Chen et al used magnetorheological dampers to control the wind‐induced response of a transmission tower‐line system and proposed two semi‐active control strategies for the vibration mitigation of tower‐line systems. Zhang et al proposed a spring pendulum to reduce the vibration of a transmission tower.…”

Section: Introductionmentioning

confidence: 99%

Control performance of suspended mass pendulum with the consideration of out-of-plane vibrations

Huang

Huo

et al. 2018

Struct Control Health Monit

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Summary The analysis model of a suspended mass pendulum (SMP) control system is usually simplified as a planar model, which only considers the swing angle in‐plane. However, out‐of‐plane vibrations of a pendulum are inevitable and are significantly more complex than that assumed in the planar model. To overcome the limitations of the current planar model, this study proposes a spatial model of the pendulum. The kinetic equations of the spatial SMP model coupled with a single degree of freedom structure are established considering the swing angle of the SMP in‐plane and out‐of‐plane. The vibration characteristics of the pendulum and their influence on the dynamic response of the structure are numerically analyzed. Compared with the numerical results of the planar model, the vibrations of a pendulum are more accurately simulated by the spatial model, even when the rotation angle of pendulum out‐of‐plane is greater than 20°. A parameter study is performed considering the influencing parameters of the control system, including the excitation periods, pendulum length, mass ratio, and amplitudes of the horizontal rotation angle at the maximum displacement of the structure. The results show that the horizontal rotation angle of the pendulum negatively affects the vibration suppression of the structure. Furthermore, to verify the vibration control effectiveness of the spatial SMP model, a transmission tower was controlled under eight types of seismic excitations. The results reveal that the SMP has a clear mitigation effect on the seismic response of the tower.

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Section: Introductionmentioning

confidence: 99%

Control performance of suspended mass pendulum with the consideration of out-of-plane vibrations

Huang

Huo

et al. 2018

Struct Control Health Monit

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“…One category aims at increasing the damping ratio by incorporating energy dissipating dampers, such as frictiontype reinforcing members [2,7,8], magnetorheological (MR) dampers [9], viscoelastic dampers (VED) [10], lead viscoelastic dampers (LVED) [11,12], and giant magnetostrictive material (GMM) actuators [13].…”

Section: Introductionmentioning

confidence: 99%

Control of Wind-Induced Vibration of Transmission Tower-Line System by Using a Spring Pendulum

Zhang

Ren

et al. 2015

Mathematical Problems in Engineering

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The high-voltage power transmission tower-line system, which is a high flexible structure, is very susceptible to the wind-induced vibrations. This paper proposes the utilization of the internal resonance feature of the spring pendulum to reduce the wind-induced vibration of a transmission tower. The kinetic expression of the spring pendulum system is obtained through Lagrangian equation. The condition of the internal resonance is verified to be = 2, in which is the ratio of the spring mode frequency over the pendulum mode frequency. A 55 m tower in the Liaoning province is established in SAP2000 to numerically verify the effectiveness of the proposed device. The spring pendulum is modeled using Link element. The wind speed history is generated based on Kaimal spectrum using harmonic superposition method. Results show that, (1) compared with the suspended mass pendulum, the spring pendulum absorbs more energy and reduces the oscillation more effectively and (2) the vibration control performance of the proposed spring pendulum improves as the external wind load increases.

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“…For a transmission tower with determined parameters, it is troublesome to attain the relationship be-tween dynamic characteristics and changed parameters by numerous recalculation which will be almost impossible for large scale structures [1][2][3]. While sensitivity analysis, as an alternative approach, can take structural parameters as variable and achieve the relationship only with one time analysis.…”

Section: Introductionmentioning

confidence: 99%

“…The study on frequency sensitivity of a transmission tower is actively carried out in this study. The three dimensional analytical model of a transmission tower is established by using the finite element (FE) method [4][5][6]. The sensitivity coefficients to natural frequencies are deduced based on the equation of motion of the tower [7][8].…”

Section: Introductionmentioning

confidence: 99%

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Peng-yun¹,

Chen²,

Zheng³

et al. 2015

Proceedings of the 5th International Conference on Advanced Design and Manufacturing Engineering

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Abstract. Sensitivity analysis as an alternative approach can take structural parameters as variable and achieve the relationship only with one time analysis. The study on frequency sensitivity of a transmission tower is actively carried out in this study. The three dimensional analytical model of a transmission tower is established by using the finite element method. The sensitivity coefficients to natural frequencies are deduced based on the equation of motion of the tower. A real transmission tower constructed in China is taken as an example to examine the feasibility and reliability of the proposed sensitivity computation approach. The made observations demonstrate that the Young's modulus of the vertical major members plays an important role in the first two vibration modes in comparison with all the other vibration modes.

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Control of Wind-Induced Response of Transmission Tower-Line System by Using Magnetorheological Dampers

Cited by 49 publications

References 16 publications

Control performance of suspended mass pendulum with the consideration of out-of-plane vibrations

Control performance of suspended mass pendulum with the consideration of out-of-plane vibrations

Control of Wind-Induced Vibration of Transmission Tower-Line System by Using a Spring Pendulum

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