基于导纳方法的大型空间结构被动减振研究

基金项目: 国家自然科学基金;(19632001)

Passive Vibration Control of Spare Structure by Receptance Theory

1.
Shanghai, Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, P R China;
2.
School of Aeronautics, Harbin, Institute of Technology, Harbin 150001, P R China

摘要: 以导纳方法研究空间桁架或框架结构的振动,建立了适合分析各种边界条件下均匀梁的机械导纳的通用计算方法,然后通过导纳函数求解各结构单元传递或损耗的功率,通过对损耗功率较大的单元来增加结构的阻尼特性。根据导纳分析结果,可以寻找阻尼单元的最优位置,对结构进行局部修改。
- 导纳 /
- 振动控制 /
- 损耗功率 /
- 阻尼
Abstract: The vibration of three-dimensional frame structures was studied as receptance motion.A receptance model was constructed for passive vibration reduction.First,the universal receptance computational method suitable to any combination of boundary conditions was given,and then the way of passive damping-damping elements was analyzed,and a iterative approach to select optimal damping positions,whose dissipated power is larger than the others,was proposed based on the results of receptance analysis.The results show that,the receptance model is very stitable for local modification and analysis of structures.
- passive vibration control /
- mechanical receptance /
- energy dissipate power /
- damping elements

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