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力学与实践 ›› 2000, Vol. 22 ›› Issue (3): 0-0.doi: 10.6052/1000-0879-f2000-065

• 论文 •    

粘弹性铰对梁结构模态性能的影响分析

严天宏 郑钢铁   

  1. 中国科学院上海技术物理研究所小卫星工程部
  • 收稿日期:2008-01-15 修回日期:1900-01-01 出版日期:2000-06-10 发布日期:2000-06-10

ANALYSIS OF MODAL PROPERTIES OF BEAMS WITH VISCO-ELASTIC SUPPORT JOINTS

  • Received:2008-01-15 Revised:1900-01-01 Online:2000-06-10 Published:2000-06-10

摘要: 研究以连接效结构中置入粘弹性材料时,预紧力大小改变时引起铰点约束刚度变化对模态性能的影响.给出了平移约束刚度和旋转约束刚度变化时结构模态参数变化的解析表达式.可以分析两个参数同时变化的固有频率和损耗因子变化的三维图.可获得对应最大损耗因子约束参数.可为结构的被动控制设计提供一定的指导.

Abstract: The effects of visco-ealstic materialdamped joints on modal parameters of beamsare investigated. The governing equations of theimpedances at the joints for translational and ro-tational motions are given by considering springswith complex stiffness. The natural frequencies andmodal loss factors can be obtained by solving theequations. Numerical result can be represented inthree dimcnsional curves, which can be used for pas-sive vibration control design directly