PARAMETER OPTIMIZATION OF MASS DAMPER CONSISTING OF COMPLIANT MECHANISM FOR BI-DIRECTIONAL CONTROL OF SPATIAL STRUCTURES
PARAMETER OPTIMIZATION OF MASS DAMPER CONSISTING OF COMPLIANT MECHANISM FOR BI-DIRECTIONAL CONTROL OF SPATIAL STRUCTURES
复制标题
空间结构双向控制柔顺机构质量阻尼器参数优化
DOI：
10.3130/aijs.77.379
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
M. Ohsaki
中科院分区：
文献类型：
--
作者：
S. Tsuda;M. Ohsaki
提出了一种用于双向地震作用下空间结构地震反应被动控制的新型质量阻尼器。质量阻尼器由一个三自由度柔性机构、一个质量块、三个弹簧和一个粘滞阻尼器组成。通过利用弹簧的柔性，质量块的运动在两个方向上被放大，并且质量块的振动能量被粘性阻尼器吸收。首先，通过进行一系列的动态响应分析，使用离散化参数值的随机选择的质量阻尼器的候选参数进行搜索。参数进一步优化使用启发式方法称为禁忌搜索。与传统的单自由度调谐质量阻尼器相比，讨论了质量阻尼器的特性和有效性。
A new type of mass damper is presented for passive seismic response control of spatial structures subjected to bi-directional ground motions. The mass damper consists of a three-degree-of-freedom compliant mechanism with a mass, three springs and a viscous damper. By utilizing the flexibility of springs, the movement of the mass is amplified in two directions and the vibration energy of the mass is absorbed by the viscous damper. The candidate parameters of the mass damper are first searched globally using a random selection of the discretized parameter values by carrying out a series of dynamic response analyses. The parameters are further optimized using a heuristic approach called tabu search. The characteristics and the effectiveness of the mass damper are discussed in comparison to the conventional tuned mass damper that has single-degree-of-freedom.