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．
The vibration of three-dimensional frame structures was studies 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 re- sults of receptance analysis. The results show that, the receptance model is very stitable for local modification and analysis of structures.
出处
《应用数学和力学》
CSCD
北大核心
2000年第4期424-430,共7页
Applied Mathematics and Mechanics
基金
国家自然科学基金!(19632001)
关键词
导纳
振动控制
航天结构
空间结构
被动减振
passive vibration control
mechanical receptance: energy dissipate power
damping ele- ments
