原文传递
A New Type of Inerter with Easily Adjustable Inertance and Superior Adaptability: Crank Train Inerter
| 题名： | A New Type of Inerter with Easily Adjustable Inertance and Superior Adaptability: Crank Train Inerter |
| 正文语种： | eng |
| 作者： | Yu-ji Tai;You-sheng Xu;Xu-gang Hua;Chao Chen;Wen-xi Wang;Zheng-qing Chen |
| 作者单位： | Hunan Univ.;Shenzhen Municipal Design and Research Institute Co. LTD.;Hunan Univ.;Hunan Univ.;Hunan Univ.;Hunan Univ. |
| 关键词： | Inerter;Crank train;Mechanical property;Vibration isolation;Optimal inertance |
| 摘要： | Abstract A new type of inerter, called a crank train inerter (CTI), is investigated for structural vibration isolation. The CTI consists of a crank, a linking rod, a gear-pinion box, and a flywheel that generates inertance. It has advantages of quick adjustment of inertance and strong adaptability to other disturbances. First, the inertial force provided by the CTI is linearized and expressed in a simple format; the minimum length of linking rod and crank are obtained for a CTI operating linearly under various deformed configurations. Then, the motion equation of the coupled structure-CTI system is formulated, and transmissibility is analyzed. Laboratory experiments are next carried out to verify the CTI’s mechanical property and vibration isolation performance. It is shown that the inertance of the CTI obtained in the tests agrees well with the analytical result. CTIs can significantly decrease the amplitude-frequency responses at the fundamental frequency but cannot achieve vibration isolation in a full frequency range. Finally, the seismic control effect of base-isolated buildings with and without CTI is numerically studied. An optimal design method of the CTI is proposed, and the story drift ratio and deformation of the isolation layer can be reduced simultaneously with the optimal inertance. The installation methods of CTIs for buildings are also presented. |
| 出版年： | 2023 |
| 期刊名称： | Journal of structural engineering |
| 卷： | 149 |
| 期： | 6 |
| 页码： | 1.1-1.16 |
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