Smart Structures and Systems

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Feasibility of a new hybrid base isolation system consisting of MR elastomer and roller bearing

  • Hwang, Yongmoon (Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology) ;
  • Lee, Chan Woo (Department of Civil and Environmental Engineering, Korea Army Academy at Yeong-cheon) ;
  • Lee, Junghoon (Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology) ;
  • Jung, Hyung-Jo (Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology)
  • Received : 2019.10.03
  • Accepted : 2020.01.09
  • Published : 2020.03.25
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Abstract

Magnetorheological elastomer (MRE), a smart material, is an innovative material for base isolation system. It has magnetorheological (MR) effect that can control the stiffness in real-time. In this paper, a new hybrid base isolation system combining two electromagnetic closed circuits and the roller bearing is proposed. In the proposed system, the roller part can support the vertical load. Thus, the MRE part is free from the vertical load and can exhibit the maximum MR effect. The MRE magnetic loop is constructed in the free space of the roller bearing and forms a strong magnetic field. To demonstrate the performance of the proposed hybrid base isolation system, dynamic characteristic tests and performance evaluation were carried out. Dynamic characteristic tests were performed under the extensive range of strain of the MRE and the change of the applied current. Performance evaluation was carried out using the hybrid simulation under five earthquakes (i.e., El Centro, Kobe, Hachinohe, Northridge, and Loma Prieta). Especially, semi-active fuzzy control algorithm was applied and compared with passive type. From the performance evaluation, the comparison shows that the new hybrid base isolation system using fuzzy control algorithm is superior to passive type in reducing the acceleration and displacement responses of a target structure.

Keywords

Acknowledgement

Supported by : National Research Foundation Korea (NRF)

This work was supported by the National Research Foundation Korea (NRF) grant funded by the Korea government (MSIP) (NRF-2019R1A2C2007835 and No. 2017R1A5A1014883).

References

  1. Behrooz, M., Wang, X.J. and Gordaninejad, F. (2014a), "Modeling of a new semi-active/passive magnetorheological elastomer isolator", Smart Mater. Struct., 23(4), 045013. https://doi.org/10.1088/0964-1726/23/4/045013
  2. Behrooz, M., Wang, X.J. and Gordaninejad, F. (2014b), "Performance of a new magnetorheological elastomer isolation system", Smart Mater. Struct., 23(4), 045014. https://doi.org/10.1088/0964-1726/23/4/045014
  3. Chen, L., Gong, X.L., Jiang, W.Q., Yao, J.J., Deng, H.X. and Li, W.H. (2007), "Investigation on magnetorheological elastomers based on natural rubber", J. Mater. Sci., 42(14), 5483-5489. https://doi.org/10.1007/s10853-006-0975-x
  4. Chen, P.C., Hsu, S.C., Zhong, Y.J. and Wang, S.J. (2019), "Realtime hybrid simulation of smart base-isolated raised floor systems for high-tech industry", Smart Struct. Syst., Int. J., 23(1), 91-106. https://doi.org/10.12989/sss.2019.23.1.091
  5. Clutch, M.F. and Rabinow, J. (1948), "Technical News Bulletin", National Bureau of Standards, 32(4), 7.
  6. Davis, L.C. (1999), "Model of magnetorheological elastomers", J. Appl. Phys., 85(6), 3348-3351. https://doi.org/10.1063/1.369682
  7. Domizio, M.N., Ambrosini, D. and Curadelli, O. (2019), "TMD effectiveness in nonlinear RC structures subjected to near fault earthquakes", Smart Struct. Syst., Int. J., 24(4), 447-457. https://doi.org/10.12989/sss.2019.24.4.447
  8. Ginder, J.M., Nichols, M.E., Elie, L.D. and Clark, S.M. (2000), "Controllable-stiffness components based on magnetorheological elastomers", Proceedings of SPIE's 7th Annual International Symposium onsmart Structurs and Materials: Smart Structures and Integrated Systems, Newport Beach, CA, USA, March, 3985, 418-425. https://doi.org/10.1117/12.388844
  9. Jangid, R.S. and Kelly, J.M. (2001), "Base isolation for near-fault motions", Earthq. Eng. Struct. Dyn., 30(5), 691-707. https://doi.org/10.1002/eqe.31
  10. Jolly, M.R., Carlson, J.D. and Munoz, B.C. (1996), "A model of the behaviour of magnetorheological materials", Smart Mater. Struct., 5(5), 607-614. https://doi.org/10.1088/0964-1726/5/5/009
  11. Jung, H.J., Eem, S.H., Jang, D.D. and Koo, J.H. (2011), "Seismic performance analysis of a smart base-isolation system considering dynamics of MR elastomers", J. Intel. Mater. Syst. Struct., 22(13), 1439-1450. https://doi.org/10.1177/1045389X11414224
  12. Lee, C.W. (2018), "Development of Smart Base Isolation System Based on MR Elastomer and Evaluation of Its Seismic Performance", Master's Thesis; Korea Advanced Institute of Science and Technology (KAIST), Korea.
  13. Lee, C.W., Kim, I.H. and Jung, H.J. (2018), "Fabrication and characterization of natural rubber-based magnetorheological elastomers at large strain for base isolators", Shock Vib., 7434536. https://doi.org/10.1155/2018/7434536
  14. Li, Y. and Li, J. (2019), "Overview of the development of smart base isolation system featuring magnetorheological elastomer", Smart Struct. Syst., Int. J., 24(1), 37-52. https://doi.org/10.12989/sss.2019.24.1.037
  15. Li, Y., Li, J., Li, W. and Samali, B. (2013), "Development and characterization of a magnetorheological elastomer based adaptive seismic isolator", Smart Mater. Struct., 22(3), 035005. https://doi.org/10.1088/0964-1726/22/3/035005
  16. Li, Y., Li, J., Li, W. and Du, H. (2014), "A state-of-the-art review on magnetorheological elastomer devices", Smart Mater. Struct., 23(12), 123001. https://doi.org/10.1088/0964-1726/23/12/123001
  17. Liao, G.J., Gong, X.L., Kang, C.J. and Xuan, S.H. (2011), "The design of an active-adaptive tuned vibration absorber based on magnetorheological elastomer and its vibration attenuation performance", Smart Mater. Struct., 20(7), 075015. https://doi.org/10.1088/0964-1726/20/7/075015
  18. Lokander, M. and Stenberg, B. (2003), "Performance of isotropic magnetorheological rubber materials", Polym. Test., 22(3), 245-251. https://doi.org/10.1016/S0142-9418(02)00043-0
  19. Naeim, F. and Kelly, J.M. (1999), Design of Seismic Isolated Structures: from Theory to Practice, John Wiley & Sons.
  20. Nagarajaiah, S. (2006), "Structural control benchmark problem: Smart base isolated building subjected to near fault earthquakes", Structural Control and Health Monitoring: The Official Journal of the International Association for Structural Control and Monitoring and of the European Association for the Control of Structures, 13(2-3), 571-572. https://doi.org/10.1002/stc.98
  21. Nakashima, M. (2001), "Development, potential, and limitations of real-time online (pseudo-dynamic) testing", Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 359(1786), 1851-1867. https://doi.org/10.1098/rsta.2001.0876
  22. Opie, S. and Yim, W. (2011), "Design and control of a real-time variable modulus vibration isolator", J. Intel. Mater. Syst. Struct., 22(2), 113-125. https://doi.org/10.1177/1045389X10389204
  23. Park, Y.G., Ha, S.H., Seong, M.S., Jeon, J. and Choi, S.B. (2013), "Roller design of IRB Seismic Isolation Device Using Testing Evaluation: Part I. Geometry Dimension and Crowning", Transaction of the Korean Society for Noise and Vibration Engineering, 23(2), 185-191. https://doi.org/10.5050/KSNVE.2013.23.2.185
  24. Rabinow, J. (1951), "Magnetic fluid torque and force transmitting device", U.S. Patent No. 2,575,360.
  25. Ramallo, J.C., Johnson, E.A. and Spencer, B.F. (2002), ""Smart" base isolation systems", J. Eng. Mech., 128(10), 1088-1099. https://doi.org/10.1061/(ASCE)0733-9399(2002)128:10(1088)
  26. Ruddy, C., Ahearne, E. and Byme, G. (2012), "A review of magnetorheological elastomers: properties and applications", Advanced Manufacturing Science (AMS) Research, 20.
  27. Skineer, R.I., Robinson, W.H. and McVerry, G.H. (1993), An Introduction to Seismic Isolation, John Wiley & Sons.
  28. Son, I.C. (2008), "IRB System Used for Rollers to Protect Building from Earthquake", Computat. Struct. Eng., 21(4), 61-66.
  29. Tiong, P.L., Kelly, J.M. and Or, T.T. (2017), "Design approach of high damping rubber bearing for seismic isolation", Smart Struct. Syst., Int. J., 20(3), 303-309. https://doi.org/10.12989/sss.2017.20.3.303
  30. Wongprasert, N. and Symans, M.D. (2005), "Experimental evaluation of adaptive elastomeric base-isolated structures using variable-orifice fluid dampers", J. Struct. Eng., 131(6), 867-877. https://doi.org/10.1061/(ASCE)0733-9445(2005)131:6(867)
  31. Yang, J., Sun, S.S., Tian, T.F., Li, W.H., Du, H.P., Alici, G. and Nakano, M. (2016), "Development of a novel multi-layer MRE isolator for suppression of building vibrations under seismic events", Mech. Syst. Signal Process., 70, 811-820. https://doi.org/10.1016/j.ymssp.2015.08.022
  32. Yoshioka, H., Ramallo, J.C. and Spencer, B.F. (2002), ""Smart" base isolation strategies employing magnetorheological dampers", J. Eng. Mech., 128(5), 540-551. https://doi.org/10.1061/(ASCE)0733-9399(2002)128:5(540)
  33. Zhang, X.Z. and Li, W.H. (2009), "Adaptive tuned dynamic vibration absorbers working with MR elastomers", Smart Struct. Syst., Int. J., 5(5), 517-529. https://doi.org/10.12989/sss.2009.5.5.517
  34. Zhu, W. and Rui, X.T. (2014), "Semiactive vibration control using a magnetorheological damper and a magnetorheological elastomer based on the Bouc-Wen model", Shock Vib., 405421. https://doi.org/10.1155/2014/405421.

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