针对地震作用下空间网壳结构的受力和变形特点，以超磁致伸缩材料为核心元件研发了适合于空间网壳结构主动控制的超磁致伸缩主动杆件，并对其进行了磁-力耦合性能测试。基于遗传算法这一先进的优化方法，对空间网壳结构中超磁致伸缩主动杆件的布置位置进行了优化设计，并通过典型算例数值模拟及一个层网壳模型结构的振动台试验进行了优化控制效果的验证与分析。结果表明，超磁致伸缩主动杆件具有良好的作动效应，提出的优化控制方法能够较好地提高空间结构主动控制的效率，表明文中研发的超磁致伸缩主动杆件及提出的优化控制方法是有效的，能够高效、经济的实现对结构进行主动控制的目的。
Abstract
Focuses on the stress and deformation characteristics of spatial latticed structure in earthquakes, this paper uses giant magnetostrictive material as the main component to design a kind of new GMM active rod, which could used in active vibration control of spatial latticed structure，and the output performance test was carried out. The genetic algorithm has been used to optimize the position of GMM active rods in spatial latticed structure, and the optimization of the results has been analyzed and confirmed by Numerical simulation of typical example and an earthquake simulation shaking table test research to a Kiewit shell model structure. The research shows that the GMM active rod has fine actuation effective; the optimal control method could improve the efficiency of spatial structure active vibration control. It also shows that the GMM active rods with optimal control method to spatial structure were effective, and the active control of the structure could achieve efficiency and economy.
关键词
空间网壳结构 /
地震响应 /
超磁致伸缩主动杆件 /
优化控制 /
振动台试验
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Key words
Spatial latticed structure /
Seismic response /
GMM active rod /
Optimal control /
Shaking table test
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