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多自由度结构的拟负刚度阻尼器减振效果分析

Journal of Huazhong University of Science and Technology (Nature Science Edition)(2014)

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Abstract
针对拟负刚度减振的问题,提出一种负刚度控制力算法。通过对双自由度体系的振动分析,提出了多层建筑结构在应用拟负刚阻尼器减振时,拟负刚度阻尼器的布置原则。采用并联基本单元的方法来解决拟负刚度阻尼器在通用有限元分析软件中的仿真问题,并对某多层框架在地震作用下的响应进行了分析。结果表明:拟负刚度阻尼器能更有效地降低结构的加速度,同时保证结构在阻尼力的限制下位移增幅较小,比传统阻尼器的减振效果更好。
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Key words
vibration reduction,pseudo-negative stiffness control,semi-active control,dynamical re-sponse,finite elements method
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