Experimental and Numerical Study of a Seismic Rotating Mass Damper (RMD) in an Isolated Floor

  • Afshin KalantariEmail author
  • Reihane Shafie Panah
Structural Engineering


Negative stiffness has shown a capable characteristic in reduction of seismic response of structures. In this paper a passive Rotating Mass Damper (RMD) with negative stiffness characteristic, which was conceptually introduced in an earlier study, has been employed experimentally and numerically on an isolated floor to protect the building content during strong ground motions. The equipment was assumed as a rigid block on the isolated floor. The RMD devices force results indicate the negative stiffness characteristic of the damper. It was also observed that the RMD could increase the natural period of the system up to 50 percent without increasing the mass or reducing the stiffness. A numerical model of a seven storey building was employed to investigate the seismic response of the isolation floor in fourth storey. Two RMD models with different specifications and a viscous damper providing 10 percent of critical damping were applied in the study. Seven ground motion records were selected from PEER ground motion database. The time history analysis results indicate that RMD dampers show acceptable performance in terms of reducing both acceleration up to 40% and displacement responses up to 68% simultaneously in comparison with the viscous damper under the applied ground motions. The model was also analyzed employing seven artificial seismic waves. The results in this part also show the capability of the damper model in generating negative stiffness characteristics and a successful performance during excitation.


rotating mass damper passive damper seismically isolated floor seismic protection shaking table test 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Attary, N., Symans, M., Nagarajaiah, S., Reinhorn, A. M., Constantinou, M. C., Sarlis, A. A., Pasala, D. T. R., and Taylor, D. (2015). “Performance evaluation of negative stiffness devices for seismic response control of bridge structures via experimental shake table tests.” Journal of Earthquake Engineering, Vol. 19, No. 2 pp. 249–276, DOI: 10.1080/13632469.2014.962672.CrossRefGoogle Scholar
  2. Gluck, N., Reinhorn, A. M., Gluck, J., and Levy, R. (1996). “Design of supplemental dampers for control of structures.” Journal of Structural Engineering, ASCE, vol. 122, no. 12, pp. 1394–1399, DOI: 10.1061/(ASCE)0733-9445(1996)122:12(1394).CrossRefGoogle Scholar
  3. Hamidi, M. and El Naggar, M. H. (2007). “On the performance of SCF in seismic isolation of the interior equipment of buildings.” Earthquake Engineering and Structural Dynamics, Wiley, vol. 36, no. 11, pp. 1581–1604, DOI: 10.1002/eqe.708.CrossRefGoogle Scholar
  4. Iemura, H., Igarashi, A., and Kalantari, A. (2006). “Experimental verification and numerical studies of an autonomous semi-active seismic control strategy.” Structural Control and Health Monitoring, vol. 13, no. 1, pp. 301–323, DOI: 10.1002/stc.124.CrossRefGoogle Scholar
  5. Iemura, H. and Pradono, M. H. (2003). “Application of pseudo-negative stiffness control to the benchmark cable-stayed bridge.” Journal of Structural Control, vol. 10, Nos. 3–4, pp. 187–203, DOI: 10.1002/stc.25.CrossRefGoogle Scholar
  6. Iemura, H. and Pradono, M. H. (2009). “Advances in the development of pseudo-negative-stiffness dampers for seismic response control.” Structural Control and Health Monitoring, Wiley, vol. 16, Nos. 7–8, pp. 784–799, DOI: 10.1002/stc.345.Google Scholar
  7. INSO (2013). Iranian code of practice for seismic resistant design of buildings, Standard No. 2800-04, Road, Housing and Urban Development Research Center, Iranian National Standards Organization, Iran, pp. 14–66.Google Scholar
  8. Khechfe, H., Noori, M., Hou, Z., Kelly, J., and Ahmadi, G. (2002). “An experimental study on the seismic response of base-isolated secondary systems.” Journal of Pressure Vessel Technology, vol. 124, no. 1, pp. 81–88, DOI: 10.1115.1445795.CrossRefGoogle Scholar
  9. Konstantinidis, D. and Nikfar, F. (2015). “Seismic response of sliding equipment and contents in base-isolated buildings subjected to broadband ground motions.” Earthquake Engineering and Structural Dynamics, Wiley, vol. 44, no. 6, pp. 865–887, DOI: 10.1002/eqe.2490.CrossRefGoogle Scholar
  10. Lambrou, V. and Constantinou, M. C. (1994). Study of seismic isolation systems for computer floor, Technical Report NCEER-94-0020, State University of New York at Buffalo, Buffalo, NY, USA.Google Scholar
  11. Lu, L. Y. and Yang, Y. B, (1997). “Dynamic responses of equipment in structures with sliding support.” Earthquake Engineering and Structural Dynamics, vol. 26, no. 1, pp. 61–77, DOI: 10.1002/(SICI)1096-9845(199701)26:1%3C61::AID-EQE623%3E3.0.CO;2-P.CrossRefGoogle Scholar
  12. Mathew, G. M., Qureshi, A., and Jangid, R. S. (2015). “Optimal placement of negative stiffness damping system.” Proceedings of the ASME, Conference on Smart materials Adaptive structures and Intelligent Systems, Colorado Springs, CO, USA.Google Scholar
  13. MathWorks (2014). “Archived MathWorks documentation.” R2014b, The Math Works, Inc., USA.Google Scholar
  14. Molyneaux, W. G. (1957). Supports for vibration isolation, Technical Note No. 21, Aeronautical Research Council, UK.Google Scholar
  15. Pasala, D. T. R., Sarlis, A., Reinhorn, A. M., Nagarajaiah, S., Constantinou, M. C., and Taylor, D. (2015). “Apparent-weakening in SDOF Yielding structure using negative stiffness device: Experimental and Analytical study.” Journal of Structural Engineering, vol. 141, no. 4, pp. 04014130–1:04014130-8, DOI: 10.1061/(ASCE)ST.1943-541X. 0001077.CrossRefGoogle Scholar
  16. Pradono, M. H., Iemura, H., Igarashi, A., and Kalantari, A. (2008). “Application of angular-mass dampers to base-isolated benchmark building,” Structural Control and Health Monitoring, Vol. 15, No. 5, pp.737-745, DOI: 10.1002/stc270.Google Scholar
  17. Sadeghzadeh Nazari, M. and Ghafory Ashtiany, M. (2011). “Influential parameters for the design of nonstructural components in multi-story building.” Proceedings of the 3rd ECOMPAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, Corfu, Greece.Google Scholar
  18. Sarlis, A. A., Pasala, D. T. R., Constantinou, M. C., Reinhorn, A. M., Nagarajaiah, S., and Taylor, D. (2013). “Negative stiffness device for seismic protection of structures.” Journal of Structural Engineering, ASCE, vol. 139, no. 7, pp. 1124–1133, DOI: 10.1061/(ASCE)ST.1943-541X.0000616.CrossRefGoogle Scholar

Copyright information

© Korean Society of Civil Engineers and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Structural Engineering Research CenterInternational Institute of Earthquake Engineering and SeismologyTehranIran

Personalised recommendations