Theoretical and Experimental Study of Planar Parametric Oscillations in Stayed-Cable

Chen Pihua;Wang Xiuyong;Chen zhengqing;Yin Xijun;Sun Hongxin

Journal of Vibration and Shock ›› 2010, Vol. 29 ›› Issue (2) : 50-53.

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Journal of Vibration and Shock ›› 2010, Vol. 29 ›› Issue (2) : 50-53.
论文

Theoretical and Experimental Study of Planar Parametric Oscillations in Stayed-Cable

  • Chen Pihua1;Wang Xiuyong1;Chen zhengqing1;Yin Xijun2;Sun Hongxin1
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Abstract

An in-plane nonlinear vibration equation of stayed-cable motion under axial displacement excitation was introduced. Sag of cable, inclination angle, large displacement, excitation amplitude, damping coefficient and etc influencing factors were introduced into the equation. The equation was solved by Runge-Kutta Method. An Experimental model of stayed-cable is established and tested in lab. Parametric oscillation of the cable was observed first in. The results of numerical calculation and experimental data show that parametric oscillations appear in a special range of frequency ratio, amplitude-frequency curve of cable vibration is nonlinear, damp of cable is able to increase the threshold amplitude of excitation for parametric oscillations.

Key words

stayed-cable / parametric oscillations / nonlinear / frequency ratio / damp

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Chen Pihua;Wang Xiuyong;Chen zhengqing;Yin Xijun;Sun Hongxin. Theoretical and Experimental Study of Planar Parametric Oscillations in Stayed-Cable[J]. Journal of Vibration and Shock, 2010, 29(2): 50-53
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