Design Formulas of Electromagnetic Inertial Mass Dampers for Cable Vibration Mitigation
Publication: Journal of Bridge Engineering
Volume 27, Issue 1
Abstract
This study proposes the design formulas of an inerter-based damper termed electromagnetic inertial mass damper (EIMD) for bridge stay cables. To maximize the modal damping ratio for a specific cable vibration mode, we derive the design formulas of the optimal inertance coefficient and damping coefficient of the EIMD, respectively. The accuracy of the design formulas has been validated via a numerical simulation and a full-scale experimental study of a 135-m-long stay cable, and the applicable scope of the design formulas is given accordingly. This study provides simple design formulas of the EIMD for easy use in the engineering practice of cable vibration mitigation.
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Acknowledgments
The authors are grateful for the financial support from the National Natural Science Foundation of China (Grant No. 51838006), and the Fundamental Research Funds for the Central Universities (Grant No. HUST_2018KFYYX JJ007).
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Published In
Journal of Bridge Engineering
Volume 27 • Issue 1 • January 2022
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Mar 7, 2021
Accepted: Oct 6, 2021
Published online: Nov 12, 2021
Published in print: Jan 1, 2022
Discussion open until: Apr 12, 2022
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