Experimental and analytical study on design performance of full-scale viscoelastic dampers
- 233 Downloads
Viscoelastic (VE) dampers, with their stiffness and energy dissipation capabilities, have been widely used in civil engineering for mitigating wind-induced vibration and seismic responses of structures, thus enhancing the comfort of residents and serviceability of equipment inside. In past relevant research, most analytical models for characterizing the mechanical behavior of VE dampers were verified by comparing their predictions with performance test results from small-scale specimens, which might not adequately or conservatively represent the actual behavior of full-scale dampers, especially with regard to the ambient temperature, temperature rise, and heat convection effects. Thus, in this study, by using a high-performance testing facility with a temperature control system, full-scale VE dampers were dynamically tested with different displacement amplitudes, excitation frequencies, and ambient temperatures. By comparing the analytical predictions with the experimental results, it is demonstrated that adopting the fractional derivative method together with considering the effects of excitation frequencies, ambient temperatures, temperature rises, softening, and hardening, can reproduce the design performance of full-scale VE dampers very well.
Keywordsviscoelastic damper full-scale design performance dynamic test fractional derivative model
Unable to display preview. Download preview PDF.
The study was financially supported by the Science and Technology Authority of Taiwan [107-2221-E-492-004-], and was experimentally supported by the Center for Research on Earthquake Engineering (NCREE), Applied Research Laboratories (NARL) of Taiwan and the Nippon Steel & Sumitomo Metal Corporation, Japan. This support is greatfully acknowledged.
- Aprile A, Inaudi JA and Kelly JM (1997), “Evolutionary Model of Viscoelastic Dampers for Structural Applications,” Journal of Engineering Mechanics ASCE, 123(6).Google Scholar
- Federal Emergency Management Agency FEMA273 (1997), NEHRP Guidelines and Commentary for the Seismic Rehabilitation of Buildings, Building Seismic Safety Council: Washington, DC, U.S.A.Google Scholar
- Gemant A (1936), “A Method of Analyzing Experimental Results Obtained from Elasto-Viscous Bodies,” Journal of Applied Physics, 7(8): 311–317.Google Scholar
- Kasai K, JA Munshi, Lai ML and Maison BF (1993), “Viscoelastic Damper Hysteretic Model: Theory, Experiment, and Application,” Proceedings of ATC-17-1 Seminar on Seismic Isolation, Passive Energy Dissipation, and Active Control, Applied Technology Council, San Francisco California, 2: 521–532.Google Scholar
- Mahmoodi P, Robertson LE, Yontar M, Moy C and Feld I (1987), “Performance of Viscoelastic Dampers in World Trade Center Towers. Dynamic of Structures,” Proceedings of Sessions at Structural Congress 87, Orlando, Florida, 1987.Google Scholar
- Nippon Steel & Sumitomo Metal Corporation. http://www.nssmc.com/.
- Shen KL and Soong TT (1995), “Modeling of Viscoelastic Dampers for Structural Applications,” Journal of Engineering Mechanics ASCE, 121(6).Google Scholar
- Skilling JB, Tschanz T, Isyumov N, Loh P and Devenport AG (1986), “Experimental Studies, Structural Design and Full-Scale Measurements for the Columbia Seafirst Centre,” Proceedings of Building Motion in Wind, ASCE Convention, Seattle, Washington, 1986.Google Scholar
- Wang SJ, Chang KC, Hwang JS, Huang YN, Lin WC and Yang CY (2017), “Recent Progress in Taiwan on Seismic Isolation, Energy Dissipation, and Active Vibration Control,” Proceedings of New Zealand Society for Earthquake Engineering (NZSEE) Annual Conference and Anti-seismic Systems International Society (ASSISi) 15th World Conference on Seismic Isolation, Energy Dissipation, and Active Vibration Control of Structures, Wellington, New Zealand, 2017.Google Scholar