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接地式三要素型动力吸振器性能分析

邢子康 申永军 李向红

邢子康, 申永军, 李向红. 接地式三要素型动力吸振器性能分析[J]. 力学学报, 2019, 51(5): 1466-1475. doi: 10.6052/0459-1879-19-154
引用本文: 邢子康, 申永军, 李向红. 接地式三要素型动力吸振器性能分析[J]. 力学学报, 2019, 51(5): 1466-1475. doi: 10.6052/0459-1879-19-154
Xing Zikang, Shen Yongjun, Li Xianghong. PERFORMANCE ANALYSIS OF GROUNDED THREE-ELEMENT DYNAMIC VIBRATION ABSORBER[J]. Chinese Journal of Theoretical and Applied Mechanics, 2019, 51(5): 1466-1475. doi: 10.6052/0459-1879-19-154
Citation: Xing Zikang, Shen Yongjun, Li Xianghong. PERFORMANCE ANALYSIS OF GROUNDED THREE-ELEMENT DYNAMIC VIBRATION ABSORBER[J]. Chinese Journal of Theoretical and Applied Mechanics, 2019, 51(5): 1466-1475. doi: 10.6052/0459-1879-19-154

接地式三要素型动力吸振器性能分析

doi: 10.6052/0459-1879-19-154
基金项目: 1)国家自然科学基金项目(11772206);河北省高等学校创新团队领军人才计划(LJRC018);河北省高等学校高层次人才科学研究项目资助(GCC2014053)
详细信息
    通讯作者:

    申永军

  • 中图分类号: O328,TH113.1

PERFORMANCE ANALYSIS OF GROUNDED THREE-ELEMENT DYNAMIC VIBRATION ABSORBER

  • 摘要: 利用固定点理论优化接地类型的动力吸振器得到的结果可能不是全局最优参数,在选择其他参数时主系统可以获得更小的振幅, 接地类型动力吸振器的优化问题值得进一步研究. 因此,以一种接地式三要素型动力吸振器为对象,通过研究系统参数变化对固 定点位置与主系统最大振幅的影响,得到了此吸振器的局部最优参数并分析了它的性能. 首先建立了此系统模型的运动微分方程, 得到了主系统振幅放大因子,发现系统存在3个与阻尼无关的固定点. 固定点中幅值较大点随系统参数变化的趋势可以代表最大振 幅随系统参数变化的趋势,因此利用盛金公式得到了固定点幅值的表达式. 为了更加精确,进一步使用数值算法得到了最大振幅与 系统参数的关系图,发现系统中存在局部最优参数. 通过对比接地式吸振器与接地三要素型吸振器的最大振幅随系统参数变化的趋 势,得到了接地式三要素型吸振器的局部最优参数,并发现当固有频率比小于局部最优频率比时,接地式三要素型吸振器模型主系 统的最大振幅要远小于接地式动力吸振器模型.

     

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出版历程
  • 收稿日期:  2019-06-17
  • 刊出日期:  2019-09-18

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