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Submitted
26 November 2021
Accepted
30 November 2021
Published
30 November 2021
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Abstract

This paper presents seismic performance of a single-degree-of-freedom (SDOF) structure equipped with a base isolation system (BIS). Common BIS employs rubber material to provide lateral flexibility in order to minimize the transmitted energy induced by the ground motion to the structure. The concept is to lower the structural natural frequency such that it falls far below the pre-dominant frequency of most earthquakes. A similar effect can also be achieved by using a device called inerter, a two-terminal device generated forces proportional to the relative acceleration between its two terminals. Instead of reducing stiffness, inerter amplifies the theoretical mass of the structure without significantly increase its physical mass. It is because, depending on the inertance-generation mechanism, an inerter is capable of generating inertance – a constant ratio of forces and relative accelerations of the inerter – several times higher than its physical mass. In this paper, the effectiveness of inerter for use as a BIS is compared to the common BIS concept. The results show that, for a similar natural frequency level, a BIS with inerter has narrower response around the resonance in the frequency domain. Furthermore, in the time domain analysis, the structure with an inerter has a lower response compared to the structure with a traditional BIS when subjected to a long-period earthquake ground motion

Keywords

Base isolation system inertance inerter resonance

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How to Cite
Deastra, P. (2021). THE USE OF AN INERTER FOR BASE-ISOLATION SYSTEM IN A SINGLE-DEGREE-OF-FREEDOM STRUCTURE. Teknisia, 26(2), 93–99. https://doi.org/10.20885/teknisia.vol26.iss2.art4
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References

  1. J. M. Kelly, Earthquake-resistant design with rubber, Vol. 7, 1993.
  2. W. H. Robinson, Lead-rubber hysteretic bearings suitable for protecting structures during earthquakes, Earthquake Engineering & Structural Dynamics, vol. 10, no. 4, pp. 593-604, 1982.
  3. A. Mokha, M. Constantinou, A. Reinhorn, and V. A. Zayas, Experimental study of friction-pendulum isolation system, Journal of Structural Engineering, vol. 117, no. 4, pp. 1201-1217, 1991.
  4. Y.-P.Wang, M.-C. Teng, and K.-W. Chung, Seismic isolation of rigid cylindrical tanks using friction pendulum bearings, Earthquake engineering & structural dynamics, vol. 30, no. 7, pp. 1083-1099, 2001.
  5. G. C. Lee, Y.-C. Ou, T. Niu, J. Song, and Z. Liang, Characterization of a roller seismic isolation bearing with supplemental energy dissipation for highway bridges, Journal of Structural Engineering, vol. 136, no. 5, pp. 502-510, 2010.
  6. N. A. Ortiz, C. Magluta, and N. Roitman, Numerical and experimental studies of a building with roller seismic isolation bearings, Structural Engineering and Mechanics, vol. 54, no. 3, pp. 475-489, 2015.
  7. M. C. Smith, Synthesis of mechanical networks: The inerter, IEEE Transactions on Automatic Control, vol. 47, no. 10, pp. 1648-1662, 2002.
  8. Deastra, Predaricka, D. J. Wagg, and N. D. Sims. The effect of a tuned-inerter-damper on the seismic response of base-isolated structures. 16th European Conference on Earthquake Engineering, Thessaloniki, 2018.
  9. Soong, Ming Foong, Rahizar Ramli, and Wan Nor Liza Wan Mahadi. Vehicle suspensions with parallel inerter: Effectiveness in improving vibration isolation. Journal of Vibroengineering 16.1 (2014): 256-265.
  10. Dong, Xin, Yuane Liu, and Michael ZQ Chen. Application of inerter to aircraft landing gear suspension. 34th Chinese Control Conference (CCC). IEEE, 2015.
  11. Papageorgiou, C., Houghton, N.E., Smith, M.C., Experimental testing and analysis of inerter devices. J. Dyn. Syst. Meas. Contr. 131(1), 011001. 2009.
  12. I. Lazar, S. Neild, and D. Wagg, Using an inerter-based device for structural vibration suppression, Earthquake Engineering & Structural Dynamics, vol. 43, no. 8, pp. 1129-1147, 2014.
  13. Marian, Laurentiu, and Agathoklis Giaralis. Optimal design of a novel tuned mass-damper–inerter (TMDI) passive vibration control configuration for stochastically support-excited structural systems. Probabilistic Engineering Mechanics 38 (2014): 156-164.
  14. Chen, Michael ZQ, et al. Influence of inerter on natural frequencies of vibration systems. Journal of Sound and Vibration 333.7 (2014): 1874-1887.
  15. Deastra, P., D. J. Wagg, and N. D. Sims. Using a Tuned-Inerto-Viscous-Hysteretic-Damper (TIVhD) for vibration suppression in multi-storey building structures. IOP Conference Series: Earth and Environmental Science. Vol. 708. No. 1. IOP Publishing, 2021.