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Development of ETMD for Improving TMD Control Performance

TMD 제어성능 개선을 위한 ETMD 개발

  • Jeon, Seung gon (Dept. of Construction Safety & Disaster Prevention, Chungnam State University)
  • 전승곤 (충남도립대학교 건설안전방재학과)
  • Received : 2022.04.06
  • Accepted : 2022.04.25
  • Published : 2022.07.01

Abstract

The TMD has a simpler structure than other vibration control devices and shows excellent control performance for the standardized vibration occurring in the structure. However, when the vibration cycle of the structure coincides with the vibration cycle of the TMD due to the sudden external loads, the off-tuning occurs, which threatens the structure while increasing the vibration width of the TMD. Therefore, Electromagnetic Tuned Mass Damper (ETMD) was developed as a semi-active TMD that prevents off-tuning while exhibiting excellent control performance like TMD. To verify the control performance of the developed ETMD, the bending behavior control performance evaluation experiment using a simple beam bridge was performed. The experimental method compared the mutual control power by experimenting with the existing TMD method and the developed ETMD under nine excitation frequency conditions. As a result, it was confirmed that the control effect of ETMD was about 4.85% higher than that of TMD at 3.02Hz, which generates the maximum displacement in the simple beam bridge. Also, the off-tuning occurred in some excitation conditions when using TMD, although the off-tuning did not occur when using ETMD. Therefore, the excellent control performance of the ETMD developed in this study was verified.

Keywords

Acknowledgement

이 논문은 2018년도 정부(교육과학기술부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구사업(NRF-2018R1A6A1A03025542)임. 본 연구가 이루어지도록 지원하여 준 한국연구재단에 대단히 감사합니다.

References

  1. Khoury OE, Adeli H. Recent Advances on Vibration Control of Structures under D ynamic Loading. Archives of Computational Methods in Eng. 2013 Dec;20(4):353-360. https://doi.org/10.1007/s11831-013-9088-2
  2. Bitraf M, Hurlebaus S, Barrosoi LR. Active and Semi-active Adaptive Control for Undamaged and Damaged Building Structures under Seismic Load. Computer-Aided Civil and Infrastructure Eng. 2012 Jan;27(1):48-64. https://doi.org/10.1111/j.1467-8667.2011.00719.x
  3. Dyke SJ. Current Directions in Structural Control in the US. 9th World Seminar on Seismic Isolation. Energy Dissipation and Active Vibration Control of Structures. Kobe, Japan. 2005;1-22.
  4. Frahm H. Device for damping vibrations of bodies. U.S. Patent. 989;9528.
  5. Setareh M, Ritchey JK, Baxter AJ, Murray TM. Pendulum tuend mass dampers for floor vibration control. ASCE. Journal of Performance of Constructed Facilities. 2006 Feb;20(1):64-73. https://doi.org/10.1061/(ASCE)0887-3828(2006)20:1(64)
  6. Huang H, Mosalam KM, Chang WH. Adaptive tuned mass damper with shape memory alloy for seismic application. Engineering Structures. Elsevier. 2020 Nov;223:111171. https://doi.org/10.1016/j.engstruct.2020.111171
  7. Ko AR, Lee CH, Kim SY. Enhancing Robustness of floor vibration control by using asymmetric tuned mass damper. Journal of the Korean Society of Steel Construction. 2014 Jun;26(3):177-189. https://doi.org/10.7781/KJOSS.2014.26.3.177
  8. Wang X, Wang D, Xu Z, Wang T, Fu G, Lu C. Experimental study of the semi-active mass damper under impulse excitation. Review of Scientific Instruments. 2022 Jan;93(1).
  9. Kim GC, Kwak CS. Application of MR damper for vibration control of floor slab. Journal of the Korean Association for Spatial Structures. 2006 Jan;6(3):2002 Apr [cited 2007 Jan 8];8(1):61-69.
  10. Angelis MD, Perno S, Reggio A. Dynamic response and optimal design of structures with large mass ratio TMD. Earthquake Engng Struct. Dyn. 2012;41:41-60. https://doi.org/10.1002/eqe.1117
  11. Sadek F, Mohraz B, Taylor AW, Chung RM. A method of estimating the parameters of tuned mass dampers for seismic applications. Earthquake Engng Struct. Dyn. 1997 Jun;26(6):617-635. https://doi.org/10.1002/(SICI)1096-9845(199706)26:6<617::AID-EQE664>3.0.CO;2-Z