An investigation of the mechanisms causing large-amplitude wind-induced vibrations in stay cables using unsteady surface pressure measurements

McTavish, Sean; Raeesi, Arash; D'Auteuil, Annick; Yamauchi, Kunihiro; Satō, Hiroshi

doi:10.1016/j.jweia.2018.10.004

Cited by 19 publications

(8 citation statements)

References 5 publications

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“…e actual unit of response amplitude is m, and the unit of excitation amplitude (p * ) is N/m. It is worth noting that the excitation amplitude (p) is obtained by substituting excitation amplitude (p * ) into equations (17) and (18). And the definition of the unit of excitation amplitude (p, p * ) and response amplitude (a) in the figure is consistent with Figure 3, respectively.…”

Section: Principal Resonance Of the Weakmentioning

confidence: 83%

“…Moreover, some scholars also studied the aeroelastic instability of stay cables. And the rain-wind-induced vibration [16] and the dry galloping [17] of the stay cable fall under the problems of aeroelastic instability. As is known to all, it is believed that this aeroelastic instability problem is due to the formation and oscillation of a water rivulet on the upper cable surface, which changes the cable aerodynamics and absorbs energy into the system.…”

Section: Introductionmentioning

confidence: 99%

“…Huang et al [19] solved the governing equations for the structure of the suspended cable-stayed beam by using the normal form and the multiple-scale method and found deformations of the stay cable have a significant influence on the bending aeroelastic instability of the structure. In [16][17][18][19], some scholars studied the rain-windinduced vibration, ice galloping, and dry galloping of the stay cable and the influence of the deformations of the stay cable on the aerodynamic stability of the cable. e transmission line is also a cable structure because the transmission line is easy to icing, resulting in irregular crosssection shape.…”

Section: Introductionmentioning

confidence: 99%

“…Based on the analysis of [8][9][10][11][12][13][14][15][16][17][18][19], few scholars have studied the influence of dynamic wind on transmission lines. And based on the influence of dynamic wind on the dynamic response of the structure in [20,21], this paper systematically studies the influence of dynamic wind on the nonlinear galloping characteristics of iced transmission lines.…”

Section: Introductionmentioning

confidence: 99%

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Planar Nonlinear Galloping of Iced Transmission Lines under Forced Self-Excitation Conditions

Liu

Wu²,

Zou

et al. 2021

Discrete Dynamics in Nature and Society

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In order to study the influence of dynamic wind on the nonlinear galloping characteristics of iced transmission lines, an external excitation load is added to the governing equation of iced transmission lines under the condition of stable wind, and a new forced self-excited system has been established. The frequency-amplitude relationship of the forced self-excited system under weak excitation and strong excitation is obtained by using the multiple-scale method. The principal resonances and superharmonic and subharmonic resonances of the forced self-excited system have also been analyzed. The results show that, in the forced self-excited system under strong excitation, when the excitation frequency is close to the integral and fractional times of the natural frequency, it is easier to produce 1/2-order subharmonic resonance, 2-order superharmonic resonance, and 3-order superharmonic resonance. In addition, numerical techniques provide bifurcation diagrams of different control parameters, which are able to highlight the effects of the simultaneous presence of the sources of excitation. When the control parameters (wind velocity, excitation amplitude, tuning parameter, tension, and Young’s modulus) change, the response amplitudes of the principal resonance and harmonic resonance will have multivalues, jump phenomenon, and hardening behavior. The control parameters can be used as a reference for engineering design. More importantly, as a combination of the Duffing equation and the Rayleigh equation, the forced self-excited system also has high theoretical research value.

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Section: Principal Resonance Of the Weakmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Planar Nonlinear Galloping of Iced Transmission Lines under Forced Self-Excitation Conditions

Liu

Wu²,

Zou

et al. 2021

Discrete Dynamics in Nature and Society

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“…Therefore, both transmission lines and stay-cables belong to cable structure. Under the action of external excitation, the phenomenon of rain-wind induced galloping [4], dry-galloping [5] and ice-galloping will appear in the stay cable of cable-stayed bridge.…”

Section: Introductionmentioning

confidence: 99%

Forced-self-excited system of iced transmission lines under planar harmonic excitations

et al. 2022

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This paper is concerned with the analysis of the self-excited vibrations and forced vibrations of the iced transmission lines. By introducing the external excitation load, the effect of dynamic wind on the nonlinear vibration equations of motion is reflected by vertical aerodynamic force. The approximate analytical solution of the non-resonance, and the amplitude frequency response relation of the principal resonance of the forced self-excited system are obtained by using the multiple scale method. With the increase in excitation amplitude, the nonlinearity of the system is enhanced, and the forced-self-excited system experiences three vibration stages (self-excited vibration, the superposition form of self-excited vibration and forced vibration, forced vibration controlled by nonlinear damping). Among them, the accuracy of the approximate analytical solution decreases with the increase of the nonlinear strength. And the excitation amplitude is greater than the critical value, the quenching phenomenon appear in the forced-self-excited system, and the discriminant formula is derived in this paper. In addition, the frequency of excitation term determines the vibration form of the system. The principal resonance, super-harmonic resonance and subharmonic resonance of the forced-self-excited system are analyzed by using different excitation frequencies. Compared with the principal resonance and the harmonic resonance, the meaningful transition from periodic response to quasi periodic response is easy to appear with the condition of the 1/3-order sub-harmonic and the 3-order super-harmonic. The conclusions would be helpful to the practical engineering of the iced transmission lines. More important, as a combination of Duffing equation and Rayleigh equation, the forced-self-excited system also has high theoretical research value.

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Explore Essential Elements in the Generation Mechanisms of Wind-Induced Cable Vibrations: An Insight Offered by Numerical Techniques

Cheng,

Wang

2024

Lecture Notes in Civil Engineering

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An investigation of the mechanisms causing large-amplitude wind-induced vibrations in stay cables using unsteady surface pressure measurements

Cited by 19 publications

References 5 publications

Planar Nonlinear Galloping of Iced Transmission Lines under Forced Self-Excitation Conditions

Planar Nonlinear Galloping of Iced Transmission Lines under Forced Self-Excitation Conditions

Forced-self-excited system of iced transmission lines under planar harmonic excitations

Explore Essential Elements in the Generation Mechanisms of Wind-Induced Cable Vibrations: An Insight Offered by Numerical Techniques

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