A Friction Damper with Continuously Variable Post-Sliding Stiffness

Abstract:

Proposed in this study is a type of friction damper characterized a continuously variable post-sliding stiffness, which provides an increasing post-sliding force with the accretion of the deformation. It is possible to adjust the output force according to the performance targets at different earthquake levels, thus enlightening a practical approach to the explicit structure control to satisfy all of the required performance objectives. The proposed damper consists of a piston, a rubber layer, friction plates and the jacket. The friction plates and the inside of the jacket constitute the contact pair, or the sliding surface. The friction plates are fixed on the piston through the rubber layer which provides the normal pressure on the sliding surface. The radius of sliding surface varies continuously along the axis of the jacket. Both analyses and experiments reveal that the parabola shape of sliding surface would introduce a cubic force-displacement relationship, thus being helpful to prevent a structure from collapse.

• Periodical: Advanced Materials Research (Volume 304)
• Pages: 59-64
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.304.59
• Online since: July 2011
• Authors: Tao Wang, Xi Chen, Rui Teng
• Keywords: Collapse Prevention, Energy-Dissipation Device, Friction Damper, Passive Control

References

[1] V.V. Bertero: Principles of Passive Supplemental Damping and Seismic Isolation (IUSS Press, Italy 2005).

[2] J.P. Ou: Recent Advances in Research and Application of Passive Energy Dissipation Systems. Earthquake Engineering and Engineering Vibration. Vol. 16(3) (1996), pp.72-98.

[3] JSSI: Design and Construction Manual for Passively Controlled Buildings (Japan Society of Seismic Isolation, Japan 2005).

[4] K. Kasai, Y. Ooki, K. Tokoro, K. Amemiya and K. Kimura: JSSI Manual for Building Passive Control Technology. Part-1 Manual contents and design/analysis methods, Proc. 13th World Conference on Earthquake Engineering. Canada (2004). No. 2989.

[5] A. Filiatrault and S. Cherry: Comparative Performance of Friction Damper Systems and Base Isolation Systems for Earthquake Retrofit and Aseismic Design. Earthquake Engineering and Structural Dynamics. Vol. 16 (1988), pp.57-78.

DOI: 10.1002/eqe.4290160308

[6] A. Filiatrault and S. Cherry: Seismic Design Spectra for Friction Damped Structures. ASCE Journal of Structure Engineering. Vol. 116(5) (1990), pp.1334-1355.

DOI: 10.1061/(asce)0733-9445(1990)116:5(1334)

[7] A.S. Pall and C. Marsh: Response of friction damped braced frames. ASCE Journal of the Structural Division. Vol. 108(6) (1982), pp.1313-1323.

DOI: 10.1061/jsdeag.0005968

[8] I. D. Aiken, D. K. Nims, A.S. Whittaker and J.M. Kelly: Testing of Passive Energy Dissipation System. Earthquake Spectra. Vol. 9(3) (1993), pp.335-370.

DOI: 10.1193/1.1585720

[9] ABAQUS Inc. ABAQUS Version 6. 8 Documentation (2008).