非线性系统
阻尼器
振动
调谐质量阻尼器
控制理论(社会学)
消散
振动控制
流离失所(心理学)
结构工程
工程类
减震器
计算机科学
控制(管理)
声学
物理
心理学
量子力学
心理治疗师
热力学
人工智能
作者
Jian Song,Kaiming Bi,Ruisheng Ma,Zhihao Wang,Kun Xu,Huzhi Hao
标识
DOI:10.1016/j.ymssp.2023.110903
摘要
Inerter-based dampers (IBDs) have been demonstrated to be effective in reducing structural vibration due to the mass amplification and energy dissipation enhancement effects of inerters. However, previous studies adopted mostly an idealized linear inerter model, and the influences of inerter nonlinearities on the effectiveness of IBDs, especially in seismic-induced vibrations of adjacent structures, have yet to be fully studied. To address this research gap, a new nonlinear model is proposed to characterize the inerter nonlinearities, with the nonlinear parameters identified and validated through the mechanical performance tests. An analytical model is then established for the adjacent structures equipped with an inerter device, validating its accuracy by comparing results with shaking table tests. Finally, the influences of inerter nonlinearities on three classical IBDs, namely tuned inerter damper (TID), tuned viscous mass damper (TVMD), and spring dashpot inerter system (SDIS), in reducing the seismic responses of adjacent structures are systematically investigated. The experimental and analytical results demonstrate that inerter nonlinearities significantly affect the relative displacement between adjacent structures, and the friction is the dominant inerter nonlinearity, with the elastic effect being generally negligible. Furthermore, the influences of nonlinearities on TVMD and TID control effectiveness are contingent upon external excitations.
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