支承不在同一直线上多跨索的固有振动分析

黄 翀;吴 晓

振动与冲击 ›› 2011, Vol. 30 ›› Issue (12) : 250-252,.

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振动与冲击 ›› 2011, Vol. 30 ›› Issue (12) : 250-252,.
论文

支承不在同一直线上多跨索的固有振动分析

  • 黄 翀;吴 晓
作者信息 +

Natural vibration analysis of multi-spans cable with supports in different lines

  • HUANG Chong ; WU Xiao
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文章历史 +

摘要

研究了多跨索支承在同一平面内且不在同一直线上的固有振动。分段求出了每个单跨索的振型函数,然后根据单跨索的边界条件以及连续性条件得到了多跨索的固有频率特征方程,利用此频率特征方程即可确定多跨索的固有频率。在算例分析中,把该方法计算结果与有限元方法计算结果进行比较,验证了该计算方法可靠性,还讨论分析了多跨索的倾角对固有频率的影响。

Abstract

In this paper ,the natural vibration of mlti-spans cable with supports in different lines was studied.The modal function of single-Span was derived and the characteristic equation of frequency of multi-spans cable was derived based on the boundry condition and continuous condition of single-Span and the natural frequrncy of multi-spans cable was decided. Through the FEM analysis of mlti-spans cable, the correctness of the method was verified. In the analysis of example, the influence of angle to natural frequrncy was discussed.

关键词

支承 / / 固有振动 / 频率

Key words

support / cable / natural vibration / frequency

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导出引用
黄 翀;吴 晓 . 支承不在同一直线上多跨索的固有振动分析[J]. 振动与冲击, 2011, 30(12): 250-252,
HUANG Chong;WU Xiao. Natural vibration analysis of multi-spans cable with supports in different lines[J]. Journal of Vibration and Shock, 2011, 30(12): 250-252,

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