斜拉索面内参数振动的理论和试验研究

陈丕华;王修勇;陈政清;殷习军;孙洪鑫

振动与冲击 ›› 2010, Vol. 29 ›› Issue (2) : 50-53.

PDF(1813 KB)
PDF(1813 KB)
振动与冲击 ›› 2010, Vol. 29 ›› Issue (2) : 50-53.
论文

斜拉索面内参数振动的理论和试验研究

  • 陈丕华1;王修勇;陈政清1;殷习军2;孙洪鑫1
作者信息 +

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

  • Chen Pihua1;Wang Xiuyong1;Chen zhengqing1;Yin Xijun2;Sun Hongxin1
Author information +
文章历史 +

摘要

研究斜拉索在弦向位移激励下的面内非线性振动方程,该振动方程考虑拉索垂度、倾斜角、大位移、激励幅值、阻尼等影响因素,并应用龙格-库塔数值积分法求解该微分方程。在试验室建立了斜拉索模型,开展斜拉索受弦向位移激励的面内参数振动的试验研究,实现了斜拉索的参数振动。试验研究和数值计算表明斜拉索的参数振动与系统频率比、激励幅值、阻尼等因素有关,参数振动发生在一定的频率比范围内,斜拉索振幅与频率比关系曲线体现出非线性特性,系统阻尼使得斜拉索参数振动的激励幅值要超过一定的阀值。

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.

关键词

斜拉索 / 参数振动 / 非线性 / 频率比 / 阻尼

Key words

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

引用本文

导出引用
陈丕华;王修勇;陈政清;殷习军;孙洪鑫. 斜拉索面内参数振动的理论和试验研究[J]. 振动与冲击, 2010, 29(2): 50-53
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

PDF(1813 KB)

2982

Accesses

0

Citation

Detail

段落导航
相关文章

/