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| Vibration control of beam-TMDI system based on frequency domain analysis method |
| LI Jinhua1,2, CHAI Shizong2, ZHANG Yao2, YU Yong3 |
1.Department of Civil Engineering, East China Jiaotong University, Nanchang 330013, China;
2.National Experimental Teaching Demonstration of Civil Engineering, East China Jiaotong University, Nanchang 330013, China;
3.Jiangxi Vocational and Technical College of Communication, Nanchang 330013, China |
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Abstract Here, tuned mass damper inerter (TMDI) was used to control vibration of beam structure.Analytical expressions for displacement response of beam structure under seismic acceleration excitation and that under moving force were derived.Optimal parameters of beam-TMDI system were given, and the sensitivity of parameters was analyzed.Then, the control effect of TMDI system was studied through numerical analysis, and the vibration reduction effect of TMDI system and that of tuned mass damper (TMD) system were compared.The results showed that the vibration displacement response spectrum of beam structure obtained with the frequency domain method can effectively reflect the displacement response of beam structure; using the augmented Lagrange parametric optimization method can accurately obtain parameters being able to minimize vibration response of beam structure; the sensitivity of TMDI system can be controlled with inertial device, and the latter obviously affects the former’s robustness; the vibration reduction performance of TMDI system is obviously better than that of TMD system.
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Received: 20 January 2020
Published: 15 June 2021
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