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Smart Structures and Systems Volume 18, Number 1, July 2016 , pages 93-115 DOI: https://doi.org/10.12989/sss.2016.18.1.093 |
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An experimental study of vibration control of wind-excited high-rise buildings using particle tuned mass dampers |
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Zheng Lu, Dianchao Wang, Sami F. Masri and Xilin Lu
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| Abstract | ||
| A particle tuned mass damper (PTMD) system is the combination of a traditional tuned mass damper (TMD) and a particle damper (PD). This paper presents the results of an experimental and analytical study of the damping performance of a PTMD attached to the top of a benchmark model under wind load excitation. The length ratio of the test model is 1:200. The vibration reduction laws of the system were explored by changing some system parameters (including the particle material, total auxiliary mass ratio, the mass ratio between container and particles, the suspending length, and wind velocity). An appropriate analytical solution based on the concept of an equivalent single-unit impact damper is presented. Comparison between the experimental and analytical results shows that, with the proper use of the equivalent method, reasonably accurate estimates of the dynamic response of a primary system under wind load excitation can be obtained. The experimental and simulation results show the robustness of the new damper and indicate that the damping performance can be improved by controlling the particle density, increasing the amount of particles, and aggravating the impact of particles etc. | ||
| Key Words | ||
| particle tuned mass damper system; wind tunnel experiment; vibration control; simulation; impact dampers | ||
| Address | ||
| Zheng Lu, Dianchao Wang and Xilin Lu: State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, No. 1239, Siping Road, Shanghai, China Sami F. Masri: Viterbi School of Engineering, University of Southern California, Los Angeles, California 90089, USA | ||