Experimental Investigation into Effect of Strip or Slit Geometric Pattern on Structural and Seismic Behavior of Steel Slit Yield Damper and Determining Optimal Pattern under Cyclic Loading

Document Type : Original Article

Authors

1 Ph.D student in Structural Engineering, Faculty of Civil Engineering, Semnan University, Semnan, Iran

2 Associate Professor, Faculty of Civil Engineering, Semnan University, Semnan, Iran

Abstract

By reviewing the literature on steel slit yield dampers (SSD), this study investigated and compared the effect of new strip shapes and geometric patterns on the behavior of this type of dampers. This study investigated a reference slit-less sample (solid) along with nine samples with a single row of blades or slits and three different shapes and geometric patterns, namely simple or constant cross-section, linearly tapered cross-section, and parabolic tapered cross-section with an elliptical slit at three different heights. These samples were subjected to cyclic loading in the laboratory. After determining force-displacement hysteresis curves, the important behavioral parameters of the investigated SSDs were calculated and compared. Effective stiffness, effective damping, force capacity, and displacement under cyclic loading were among the considered parameters in the current study. Results showed that dampers with simple blades and elliptical slits exhibited the poorest and best performances, respectively. Findings also indicated that the elliptical damper offered the highest effective stiffness, greatest energy absorption, and specifically the longest durability to cyclic loads. At displacements larger than 5 mm, the increase in effective stiffness of samples with an elliptical slit was roughly 1.6 times greater than that of samples with linearly tapered cross-sections. The equivalent viscous damping within the aforementioned displacement range at the optimal dimensions for a sample with an elliptical slit was roughly 1.1 times greater than that in a sample with linearly tapered cross-section.

Keywords

References

 [1]       A. Benavent-Climent, “A brace-type seismic damper based on yielding the walls of hollow structural sections,” Engineering Structures, vol. 32, no. 4, pp. 1113-1122, (2010).
[2]        A. S. Whittaker, V. V. Bertero, C. L. Thompson, and L. J. Alonso, “Seismic testing of steel plate energy dissipation devices,” Earthquake Spectra, vol. 7, no. 4, pp. 563-604, (1991).
[3]        R. K. Mohammadi, A. Nasri, and A. Ghaffary, “TADAS dampers in very large deformations,” International Journal of Steel Structures, vol. 17, no. 2, pp. 515-524, (2017).
[4]        H.-N. Li, and G. Li, “Experimental study of structure with “dual function” metallic dampers,” Engineering Structures, vol. 29, no. 8, pp. 1917-1928, (2007).
[5]        F. Nateghi-Alahi, and M. Torbat Esfahani, “E‌x‌p‌e‌r‌im‌e‌n‌t‌a‌l a‌n‌d a‌n‌a‌l‌y‌t‌i‌c‌a‌l b‌e‌h‌a‌v‌i‌o‌r o‌f a‌c‌c‌o‌r‌d‌i‌o‌n m‌e‌t‌a‌l‌l‌i‌c d‌a‌m‌p‌e‌r‌s b‌y i‌n‌c‌r‌e‌a‌s‌i‌n‌g t‌h‌e n‌u‌m‌b‌e‌r o‌f l‌a‌y‌e‌r‌s,” Sharif Journal of Civil Engineering, vol. 31.2, no. 3.1, pp. 19-29, (2015).
[6]        K. Deng, P. Pan, W. Li, and Y. Xue, “Development of a buckling restrained shear panel damper,” Journal of Constructional Steel Research, vol. 106, pp. 311-321, (2015).
[7]        Abdolrahim Jalali, Mojtaba Daie, Seyed Vahid Mousavi Nazhadan, Pedram Kazemi- Arbat and Mahdi Shariati, “Seismic performance of structures with pre-bent strips as a damper,” Journal of Constructional Steel Research, Vol. 7(26), pp. 4061-4072, (2012).
 [8]       S.-H. Oh, Y.-J. Kim, and H.-S. Ryu, “Seismic performance of steel structures with slit dampers,” Engineering Structures, vol. 31, no. 9, pp. 1997-2008, (2009).
[9]        M. Shariati, M.M. Tahir, Tee Chin Wee, S.N.R. Shah, A. Jalali, "Experimental investigations on monotonic and cyclic behavior of steel pallet rack connections" Engineering Failure Analysis,Volume 85, March 2018, Pages 149-166.
[10]      Mahdi Shariati, Ali Toghroli, Abdolrahim Jalali and Zainah Ibrahim, "Assessment of stiffened angle shear connector under monotonic and fully reversed cyclic loading " Structural and Mechanical Engineering, 2017, Pages 64-68.
[11]      K. Deng, P. Pan, J. Sun, J. Liu, and Y. Xue, “Shape optimization design of steel shear panel dampers,” Journal of Constructional Steel Research, vol. 99, pp. 187-193, (2014).
[12]      B. Zhu, T. Wang, and L. Zhang, “Quasi-static test of assembled steel shear panel dampers with optimized shapes,” Engineering Structures, vol. 172, pp. 346-357, (2018).
[13]      L.-Y. Xu, X. Nie, and J.-S. Fan, “Cyclic behaviour of low-yield-point steel shear panel dampers,” Engineering Structures, vol. 126, pp. 391-404, (2016).
[14]      R. W. Chan, and F. Albermani, “Experimental study of steel slit damper for passive energy dissipation,” Engineering Structures, vol. 30, pp. 1058-1066, (2008).
[15]      D. R. Teruna, T. A. Majid, and B. Budiono, “Experimental study of hysteretic steel damper for energy dissipation capacity,” Advances in Civil Engineering, vol. 2015, (2015).
[16]      J. Zheng, A. Li, and T. Guo, “Analytical and experimental study on mild steel dampers with non-uniform vertical slits,” Earthquake Engineering and Engineering Vibration, vol. 14, no. 1, pp. 111-123, (2015).
[17]      C.-H. Lee, Y. K. Ju, J.-K. Min, S.-H. Lho, and S.-D. Kim, “Non-uniform steel strip dampers subjected to cyclic loadings,” Engineering Structures, vol. 99, pp. 192-204, (2015).
[18]      H. Ahmadie Amiri, E. P. Najafabadi, and H. E. Estekanchi, “Experimental and analytical study of Block Slit Damper,” Journal of Constructional Steel Research, vol. 141, pp. 167-178, (2018).
[19]      M.A. Kafi, K. Nik-Hoosh, “The geometric shape effect of steel slit dampers in their behavior,”Magazine of Civil Engineering, vol. 87(3), pp. 3-17, (2019).
[20]      Applied Technology Council, ATC-24, Guidelines for Cyclic Seismic Testing of Component of Steel structures, Redwood City, CA (1992).
[21]      A. K. Chopra, Dynamics of structures: theory and applications to earthquake engineering: Prentice Hall Englewood Cliffs, NJ, (1995).

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History

  • Receive Date: 01 July 2019
  • Revise Date: 19 August 2019
  • Accept Date: 18 September 2019

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