Smart Structures and Systems

  • 제21권1호
  • /
  • Pages.37-51
  • /
  • 2018
  • /
  • 1738-1584(pISSN)
  • /
  • 1738-1991(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Experimental study on TLDs equipped with an upper mounted baffle

  • Shad, Hossein (Department of civil Engineering, Hakim Sabzevari University) ;
  • Adnan, Azlan bin (Faculty of Civil Engineering, Universiti Teknologi Malaysia) ;
  • Vafaei, Mohammadreza (Centre for forensic Engineering, Faculty of Civil Engineering, Universiti Teknologi Malaysia) ;
  • Behbahani, Hamid Pesaran (Faculty of Civil Engineering, Universiti Teknologi Malaysia) ;
  • Oladimeji, Abdulkareem M. (Faculty of Civil Engineering, Universiti Teknologi Malaysia)
  • 투고 : 2017.01.16
  • 심사 : 2017.11.02
  • 발행 : 2018.01.25
⟨ 이전 논문 다음 논문 ⟩

초록

Tuned Liquid Dampers (TLDs) have gained wide acceptance as a system for structural control and energy dissipation. However, they face limitation caused by low damping in deep water, which affects their efficiency. Another problem with deep water TLDs is that not all water depth participates in energy dissipation. This paper investigated the effect of upper mounted baffles on the effectiveness of TLDs. The Vertical Blockage Ratio (VBR) of baffles ranged from 10% - 90%. The TLD (with and without baffle), structure, and combined structure with TLD (with and without baffles) were subjected to free and harmonic forced vibrations. Results indicated that baffles could significantly enhance the energy dissipation of TLDs, thus reducing structural responses more than structures equipped with ordinary TLDs. It was found that, there was an optimum value of VBR in which the TLD's efficiency was maximized. When TLD had an appropriate VBR, the structural acceleration and displacement responses were suppressed significantly up to 51% and 56%, respectively.

키워드

참고문헌

  1. Ashasi-Sorkhabi, A., Kristie, J. and Mercan, O. (2014), "Investigations of the use of multiple tuned liquid dampers in vibration control", In Structures Congress 2014 (pp. 1185-1196). Boston, Massachusetts, April 3-5, ASCE.
  2. Ashasi-Sorkhabi, A., Malekghasemi, H., Ghaemmaghami, A. and Mercan, O. (2017), "Experimental investigations of tuned liquid damper-structure interactions in resonance considering multiple parameters", J. Sound Vib., 388, 141-153. https://doi.org/10.1016/j.jsv.2016.10.036
  3. Banerji, P., Murudi, M., Shah, A.H., and Popplewell, N. (2000), "Tuned liquid dampers for controlling earthquake response of structures", Earthq. Eng. Struct. D., 29(5), 587-602 https://doi.org/10.1002/(SICI)1096-9845(200005)29:5<587::AID-EQE926>3.0.CO;2-I
  4. Bauer, H.F. (1984), "Oscillations of immiscible liquids in a rectangular container: a new damper for excited structures", J. Sound Vib., 93(1), 117-133. https://doi.org/10.1016/0022-460X(84)90354-7
  5. Chen, J., Zhan, G. and Zhao, Y. (2016), "Application of spherical tuned liquid damper in vibration control of wind turbine due to earthquake excitations", Struct. Des. Tall Spec. Build., 25(10), 431-443. https://doi.org/10.1002/tal.1266
  6. Chen, Y.H., Hwang, W.S., Chiu, L.T. and Sheu, S.M. (1995), "Flexibility of TLD to high-rise building by simple experiment and comparison", Comput. Struct., 57(5), 855-861. https://doi.org/10.1016/0045-7949(95)00083-S
  7. Cho, J.R., Lee, H.W. and Ha, S.Y. (2005), "Finite element analysis of resonant sloshing response in 2-D baffled tank", J. Sound Vib., 288(4), 829-845. https://doi.org/10.1016/j.jsv.2005.01.019
  8. Deng, X. and Tait, M.J. (2009), "Theoretical modeling of TLD with different tank geometries using linear long wave theory", J. Vib. Acoust., 131(4), 041014. https://doi.org/10.1115/1.3142873
  9. Evans, D.V. and McIver, P. (1987), "Resonant frequencies in a container with a vertical baffle", J. Fluid Mech., 175, 295-307. https://doi.org/10.1017/S0022112087000399
  10. Fediw, A.A. (1992), Performance of a one dimensional tuned sloshing water damper, ME Sc (Doctoral dissertation, Thesis, University of Western Ontario, London, Canada).
  11. Hamelin, J. (2007), The Effect of Screen Geometry on the Performance of a Tuned Liquid Damper. MASc. thesis, McMaster University, Canada.
  12. Housner, G.W. (1963), "The dynamic behavior of water tanks", B Seismol. Soc. Am., 53(2), 381-387.
  13. Jeyakumaran, R. and McIver, P. (1995), "Approximations to sloshing frequencies for rectangular tanks with internal structures", J. Eng. Math., 29(6), 537-556. https://doi.org/10.1007/BF00044121
  14. Jin, H., Liu, Y. and Li, H.J. (2014), "Experimental study on sloshing in a tank with an inner horizontal perforated plate", Ocean Eng., 82, 75-84. https://doi.org/10.1016/j.oceaneng.2014.02.024
  15. Kareem, A. and Sun, W.J. (1987), "Stochastic response of structures with fluid-containing appendages", J. Sound Vib., 119(3), 389-408. https://doi.org/10.1016/0022-460X(87)90405-6
  16. Kareem, A., Kijewski, T. and Tamura, Y. (1999), "Mitigation of motions of tall buildings with specific examples of recent applications", Wind Struct., 2(3), 201-251. https://doi.org/10.12989/was.1999.2.3.201
  17. Kim, Y.M., You, K.P., Cho, J.E. and Hong, D.P. (2006), "The vibration performance experiment of Tuned Liquid damper and Tuned Liquid Column damper", J. Mech. Sci. Technol., 20(6), 795-805. https://doi.org/10.1007/BF02915943
  18. Lamb, H. (1932), Hydrodynamics. Cambridge University Press. Cambridge, UK.
  19. Limin, S.U.N. (1991), Semi-analytical modelling of tuned liquid damper (TLD) with emphasis on damping of liquid sloshing (Doctoral dissertation, University of Tokyo).
  20. Min, K.W., Kim, J. and Lee, H.R. (2014), "A design procedure of two-way liquid dampers for attenuation of wind-induced responses of tall buildings", J. Wind Eng. Ind.Aerod., 129, 22-30. https://doi.org/10.1016/j.jweia.2014.03.003
  21. Noji, T., Yoshida, H., Tatsumi, E., Kosaka, H. and Hagiuda, H. (1988), "Study on vibration control damper utilizing sloshing of water", J. Wind Eng., 37, 557-566.
  22. Novo, T., Varum, H., Teixeira-Dias, F., Rodrigues, H., Silva, M.F., Costa, A.C. and Guerreiro, L. (2014), "Tuned liquid dampers simulation for earthquake response control of buildings", Bull. Earthq. Eng., 12(2), 1007-1024. https://doi.org/10.1007/s10518-013-9528-2
  23. Ruiz, R.O., Lopez-Garcia, D. and Taflanidis, A.A. (2016), "Modeling and experimental validation of a new type of tuned liquid damper", Acta Mechanica, 227(11), 3275-3294. https://doi.org/10.1007/s00707-015-1536-7
  24. Shad, H., Adnan, A., Behbahani, H.P. and Vafaei, M. (2016), "Efficiency of TLDs with bottom-mounted baffles in suppression of structural responses when subjected to harmonic excitations", Struct. Eng. Mech., 60(1), 131-148. https://doi.org/10.12989/sem.2016.60.1.131
  25. Shad, H. (2015), Performance of Tuned Liquid Damper with Baffle in Reduction of Structural Dynamic Response, PhD Thesis, Faculty of Civil Engineering, Universiti Teknologi Malaysia;
  26. Shang, C.Y. and Zhao, J.C. (2008), "Periods and energy dissipations of a novel TLD rectangular tank with angleadjustable baffles", J. Shanghai Jiaotong University (Science), 13, 139-144. https://doi.org/10.1007/s12204-008-0139-z
  27. Soong, T.T. and Dargush, G.F. (1997), Passive energy dissipation systems in structural engineering, Wiley.
  28. Sun, L.M., Fujino, Y., Pacheco, B.M. and Chaiseri, P. (1992), "Modelling of tuned liquid damper (TLD)", J. Wind Eng. Ind. Aerod., 43(1-3), 1883-1894. https://doi.org/10.1016/0167-6105(92)90609-E
  29. Tait, M.J. (2008), "Modelling and preliminary design of a structure-TLD system", Eng. Struct., 30(10), 2644-2655. https://doi.org/10.1016/j.engstruct.2008.02.017
  30. Tait, M.J., Isyumov, N. and El Damatty, A.A. (2007), "Effectiveness of a 2D TLD and its numerical modeling", J. Struct. Eng. -ASCE, 133(2), 251-263. https://doi.org/10.1061/(ASCE)0733-9445(2007)133:2(251)
  31. Tait, M.J., Isyumov, N. and El Damatty, A.A. (2007), "Effectiveness of a 2D TLD and its numerical modeling", J. Struct. Eng. -ASCE, 133(2), 251-263. https://doi.org/10.1061/(ASCE)0733-9445(2007)133:2(251)