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拉索-并联弹簧-阻尼器系统的自由振动分析

周海俊 朱亚峰 孙利民

周海俊, 朱亚峰, 孙利民. 拉索-并联弹簧-阻尼器系统的自由振动分析[J]. 力学学报, 2013, 45(6): 957-964. doi: 10.6052/0459-1879-13-006
引用本文: 周海俊, 朱亚峰, 孙利民. 拉索-并联弹簧-阻尼器系统的自由振动分析[J]. 力学学报, 2013, 45(6): 957-964. doi: 10.6052/0459-1879-13-006
Zhou Haijun, Zhu Yafeng, Sun Limin. FREE VIBRATION OF TAUT CABLE WITH DAMPER AND PARALLEL SPRING[J]. Chinese Journal of Theoretical and Applied Mechanics, 2013, 45(6): 957-964. doi: 10.6052/0459-1879-13-006
Citation: Zhou Haijun, Zhu Yafeng, Sun Limin. FREE VIBRATION OF TAUT CABLE WITH DAMPER AND PARALLEL SPRING[J]. Chinese Journal of Theoretical and Applied Mechanics, 2013, 45(6): 957-964. doi: 10.6052/0459-1879-13-006

拉索-并联弹簧-阻尼器系统的自由振动分析

doi: 10.6052/0459-1879-13-006
基金项目: 国家自然科学基金(51108269)和土木工程防灾国家重点实验室开放课题基金(SLDRCE-08-MB-03)资助项目.
详细信息
    通讯作者:

    周海俊,副教授,主要研究方向:桥梁抗震与抗风,滨海土木工程耐久性。E-mail:haijun@szu.edu.cn

  • 中图分类号: TU973+.31

FREE VIBRATION OF TAUT CABLE WITH DAMPER AND PARALLEL SPRING

Funds: The project was supported by the National Natural Science Foundation of China (51108269) and the State Key Laboratory for Disaster Reduction in Civil Engineering (SLDRCE-08-MB-03).
  • 摘要: 分析了拉索-并联弹簧-阻尼器系统的自由振动特性,由系统的运动方程及边界条件 得到其复特征值方程。进一步研究了系统的极限解,由此讨论了拉索-并联弹簧-阻尼器系统的模态变化分区现象。以拉索-并联弹簧-阻尼器系统的二阶模态解为例,给出了模态频率和阻尼比的变化分布区间及其对应振型的变化情况。讨论了系统分区中存在的模态交叉现象;同时也讨论了斜拉索垂度对于一阶振动模态变化规律的影响。研究表明拉索-并联弹簧-阻尼器系统的振动模态演化因并联弹簧-阻尼器的位置不同而存在的明确的分区现象;安装并联弹簧和阻尼器后拉索的模态阻尼比和模态频率均可明显提高。

     

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出版历程
  • 收稿日期:  2012-01-07
  • 修回日期:  2013-04-25
  • 刊出日期:  2013-11-18

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