...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Engineering Structures >Influences of ground motion parameters and structural damping on the optimum design of inerter-based tuned mass dampers
【24h】

Influences of ground motion parameters and structural damping on the optimum design of inerter-based tuned mass dampers

机译：地面运动参数的影响和结构阻尼对基于耐动性调谐肿块的最佳设计

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Tuned mass dampers (TMDs) are widely adopted to control the adverse vibrations of engineering structures. To further improve the effectiveness of TMD, inerter was introduced into TMD recently to form inerter-based TMD systems. Similar to TMD, inerter-based TMDs should be carefully designed (optimized) in order to get their best control performances. In the previous studies on using inerter-based devices for seismic induced vibration control, the external excitation was normally simplified as a white noise and the inherent structural damping was ignored. However, it is well known that seismic excitation cannot be simply assumed as a white noise and damping always exists in the structure. The parameters obtained by the previous optimization procedures thus do not necessarily result in the best performance of the device. In the present study, the equations of motion of a single-degree-of-freedom (SDOF) structure equipped with three types of inerter-based TMDs subjected to seismic excitation are firstly developed. Instead of using a white noise as input, the filtered Kanai-Tajimi spectrum, which is characterized by the site damping and frequency, is adopted to model seismic ground motion. Then the effects of site damping, site frequency and structural damping on the inerter-based TMDs are comprehensively investigated and formulas are proposed to estimate the optimal parameters. Lastly, the responses of a structure without control and controlled by an inerter-based TMD under simulated and recorded earthquake ground motions are analysed by using MATLAB/Simulink. Numerical results show that the optimal parameters of inerter-based TMDs are significantly dependent on the site frequency and structural damping, while the site damping has little influence. Moreover, the accuracy of the proposed formulas is validated, and the control effectiveness of the inerter-based TMD is confirmed.
机译：广泛采用调谐质量阻尼器（TMDS）以控制工程结构的不利振动。为了进一步提高TMD的有效性，最近将在TMD中引入TMD以形成基于活动的TMD系统。类似于TMD，应仔细设计基于活动的TMDS（优化），以获得最佳控制性能。在先前的基于过程的地震诱导振动控制的研究中，通常简化外部激励作为白噪声，并且忽略了固有的结构阻尼。然而，众所周知，由于白色噪声并且阻尼在结构中，不能简单地假设地震激发。因此，通过先前的优化过程获得的参数不一定导致设备的最佳性能。在本研究中，首先开发出一种配备有三种类型的基于活动的TMDS的自由度（SDOF）结构的运动方程。采用过滤的KANAI-TAJIMI光谱而不是使用作为输入的白噪声，而是采用现场阻尼和频率的滤波，而是模拟地震地面运动。然后，综合研究了站点阻尼，站点频率和结构阻尼对导体的TMDS的影响，并提出了公式来估计最佳参数。最后，通过使用MATLAB / Simulink分析模拟和记录的地震地面运动下的无控制和由基于中间的TMD控制的结构的响应。数值结果表明，基于活动的TMD的最佳参数显着取决于现场频率和结构阻尼，而现场阻尼几乎没有影响。此外，验证了所提出的公式的准确性，并且证实了基于inter的TMD的控制效果。

著录项

  • 来源
    《Engineering Structures》 |2021年第15期|111422.1-111422.24|共24页
  • 作者

    Zuo Haoran; Bi Kaiming; Hao Hong; Ma Ruisheng;

  • 作者单位

    Curtin Univ Ctr Infrastruct Monitoring & Protect Sch Civil & Mech Engn Kent St Bentley WA 6102 Australia|Hong Kong Polytech Univ Dept Civil & Environm Engn Hong Kong Peoples R China;

    Curtin Univ Ctr Infrastruct Monitoring & Protect Sch Civil & Mech Engn Kent St Bentley WA 6102 Australia;

    Curtin Univ Ctr Infrastruct Monitoring & Protect Sch Civil & Mech Engn Kent St Bentley WA 6102 Australia;

    Curtin Univ Ctr Infrastruct Monitoring & Protect Sch Civil & Mech Engn Kent St Bentley WA 6102 Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Inerter-based TMDs; Optimum design; Ground motion parameters; Structural damping;

    机译：基于过程的TMDS;优化设计;地面运动参数;结构阻尼;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号