| 颗粒阻尼器减震控制的数值模拟 |
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| 引用本文： | 鲁正,吕西林. 颗粒阻尼器减震控制的数值模拟[J]. 同济大学学报(自然科学版), 2013, 41(8): 1140-1144 |
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| 作者姓名： | 鲁正 吕西林 |
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| 作者单位： | 同济大学土木工程防灾国家重点实验室,上海200092;同济大学结构工程与防灾研究所,上海200092 |
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| 基金项目： | 国家自然科学基金，上海市教育委员会晨光计划，中央高校基本科研业务费专项资金 |
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| 摘 要： | 基于离散单元法,建立了颗粒阻尼器对多自由度结构进行减震控制的数值模拟方法,并介绍了系统参数的取值方法.该方法采用合理的计算时步和高效的接触检测算法,能较好地模拟颗粒间以及颗粒与容器壁之间的相互作用.开展了附加颗粒阻尼器的多层框架的振动台试验,通过试验结果与数值模拟结果的对比发现两者吻合良好,说明该数值方法可以较好地模拟颗粒阻尼器的减震控制效果.
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| 关 键 词： | 颗粒阻尼器 离散单元法 结构振动控制 |
| 收稿时间： | 2012-08-14 |
| 修稿时间： | 2013-05-14 |
Numerical simulation of the vibration control effects of particle dampers |
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| LU ZHENG and LU XILIN. Numerical simulation of the vibration control effects of particle dampers[J]. Journal of Tongji University(Natural Science), 2013, 41(8): 1140-1144 |
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| Authors: | LU ZHENG and LU XILIN |
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| Affiliation: | State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China; Research Institute of Structural Engineering and Disaster Reduction, Tongji University, Shanghai 200092, China;State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China; Research Institute of Structural Engineering and Disaster Reduction, Tongji University, Shanghai 200092, China |
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| Abstract: | Based on the discrete element method, a numerical simulation method for vibration control effects of particle dampers is established, and the way to determine the corresponding system parameters is introduced. A suitable particle damper system is modeled. On the basis of a reasonable time step and an efficient contact detection algorithm, the interaction between particles and the container is simulated. A shaking table test of a multi storey frame with particle damper system is carried out. A comparative study show that the test results and the simulation results agree well with each other, which demonstrates that the proposed numerical simulation method can yield reasonabe control effect of particle dampers. |
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| Keywords: | particle damper discrete element method structural vibration control |
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