Hostname: page-component-78c5997874-mlc7c Total loading time: 0 Render date: 2024-11-10T07:16:08.183Z Has data issue: false hasContentIssue false
  • English
  • Français

Temperature Rise Effect of Viscoelastically Damped Structures Under Strong Earthquake Ground Motions

Published online by Cambridge University Press:  05 May 2011

K. C. Chang ,
M. H. Tsai ,
Y. H. Chang  and
M. L. Lai
K. C. Chang*
Affiliation:
Department of Civil Engineering, National Taiwan University, Taipei, Taiwan 10617,R.O.C.
M. H. Tsai*
Affiliation:
Department of Civil Engineering, National Taiwan University, Taipei, Taiwan 10617,R.O.C.
Y. H. Chang*
Affiliation:
Department of Civil Engineering, National Taiwan University, Taipei, Taiwan 10617,R.O.C.
M. L. Lai*
Affiliation:
3M Company, St. Paul, Minnesota, U.S.A.
*
*Professor
**Graduate Assistant
**Graduate Assistant
***Research Scientist
Get access

Abstract

Viscoelastic (VE) dampers have been shown to be an effective energy dissipation device for structures subjected to seismic excitations. When a VE damper is under shear deformation, the temperature within the damper material will rise due to the conversion of mechanical energy into heat. The effect of temperature rise in the VE damper on a viscoelastically damped structure may be significant because the damper stiffness can decrease due to the temperature rise in the VE damper and its energy dissipation capacity may reduce under strong earthquake ground motions. This paper is intended to quantify the temperature rise effect. A VE element which can accurately describe the frequency and temperature dependent behavior of the test results of a VE damper is first presented. The effect of temperature rise within the VE material is included. Seismic response analyses of a viscoelastically damped structure which was studied extensively by shaking table tests are carried out by two analytical methods: a frequency domain analysis and a time domain analysis. Both analyses consider the effects of frequency and ambient temperature of the VE dampers. The frequency domain approach is computationally more efficient. However, it neglects the effect of temperature rise in the analysis. The time domain method is computationally less efficient. However, it can explicitly calculate the temperature rise during the earthquake and evaluate its influence on the structural responses. Finally, parametric studies on the effect of temperature rise within the VE damper material on the seismic response of a viscoelastically damped structure are analyzed and its implications on practical applications are discussed.

Keywords

Viscoelastic dampersEnergy dissipation deviceTemperature rise effectSeismic response analysis
Type
Articles
Information
Journal of Mechanics , Volume 14 , Issue 3 , September 1998 , pp. 125 - 135
Copyright
Copyright © The Society of Theoretical and Applied Mechanics, R.O.C. 1998

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1.Mahmoodi, P., “Structure Dampers,” Journal of Structure Division, ASCE, Vol. 95, No. 10, pp. 1661–1672(1969).CrossRefGoogle Scholar
2. ATC17–1, Proceedings of Seminar on Seismic Isolation, Passive Energy Dissipation, and Active Control, Applied Technology Council, California, March (1993).Google Scholar
3. Earthquake Spectra, Passive Energy Dissipation Issue, Earthquake Engineering Research Institute, Oakland, California, Vol. 9, No. 3, August(1993).Google Scholar
4.Chang, K. C, Soong, T. T., Oh, S.T. and Lai, M. L., “Seismic Behavior of Steel Frame with Added Viscoelastic Dampers,” Journal of Structural Engineering, ASCE, Vol. 121, No. 10, pp. 1418–1426 (1995).CrossRefGoogle Scholar
5.Shen, K. L., Soong, T. T, Chang, K. C. and Lai, M. L., “Seismic Behavior of A 1/3 Scale RC Frame with Added Viscoelastic Dampers,” Engineering Structures, Vol. 17, No. 5, pp. 372–380 (1995).CrossRefGoogle Scholar
6.Chang, K. C, Chen, S. J. and Lai, M. L., “Inelastic Behavior of Steel Frames with Added Viscoelastic Dampers,” Journal of Structural Engineering, ASCE, Vol. 122, No. 10, pp. 1178–1186(1996).CrossRefGoogle Scholar
7.Chang, K. C, Lin, Y. Y. and Lai, M. L., “Seismic Design of Structures with Added Viscoelastic Dampers,” Proceedings of the 11th World Conference on Earthquake Engineering,Acapulco, Mexico,June, Paper No. 258 (1996).Google Scholar
8.Kasai, J. A.Munshi, Lai, M. L. and Maison, B. F, “Viscoelastic Damper Hysteretic Model: Theory, Experiment and Application,” Proceedings of Seminar on Seismic Isolation, Energy Dissipation, And Active Control, ATC–17–1, Vol. 2, pp. 521–532 (1993).Google Scholar
9.Tsai, C. S., “Temperature Effect of Viscoelastic Dampers during Earthquakes,” Journal of Structural Engineering, ASCE, Vol. 120, No. 2, pp. 394–409 (1994).CrossRefGoogle Scholar
10.Aprile, A., Inaudi, J. A. and Kelly, J. M., “Evolutionary Model of Viscoelastic Dampers for Structural Applications,” Journal of Engineering Mechanics, ASCE, Vol. 123, No. 6, pp. 551–560 (1997).CrossRefGoogle Scholar
11.Gemant, A., “A Method of Analyzing Experimental Results Obtained from Elasto–Viscous Bodies,” Physics, Vol. 7, pp. 311–317 (1936).CrossRefGoogle Scholar
12.Koh, C. G. and Kelly, J. M, “Application of Fractional Derivatives to Seismic Analysis of Base-Isolated Models,” Earthquake Engineering and Structural Dynamics, Vol. 19, pp. 229–241 (1990).CrossRefGoogle Scholar
13.Markis, N., and Constantinou., M. C, “Viscous Dampers: Testing, Modeling and Application in Vibration and Seismic Isolation,” Technical Report, NCEER–90–0028, Civil Eng. Dept., State University of New York, Buffalo, NY 14260 (1990).Google Scholar
14.Nashif, A. D., Jonse, D. I. G. and Henderson, J. P., Vibration Damping, John Wiley & Sons, Inc., New York (1985).Google Scholar
15.Ferry, J. D., Viscoelastic Properties of Polymers, John Wiley & Sons, Inc., New York (1980).Google Scholar
16.Lai, M. L., Lu, P., Lunsford, P. A., Kasai, K. and Chang, K. C, “Viscoelastic Damper: A Damper with Linear or Nonlinear Material?” Proceedings of the 11th World Conference on Earthquake Engineering, Acapulco, Mexico, June, Paper No. 795 (1996).Google Scholar
17.Chopra, A. K., Dynamics of Structures, Theory and Applications to Earthquake Engineering, Prentice-Hall, Englewood Cliffs, New Jersey (1995).Google Scholar
18.Architectural Institute of Japan, “Preliminary Reconnaissance Report of the 1995 Hyogoken-Nanbu Earthquake” (1995).Google Scholar