Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 30124
Evaluation of Hybrid Viscoelastic Damper for Passive Energy Dissipation

Authors: S. S. Ghodsi, M. H. Mehrabi, Zainah Ibrahim, Meldi Suhatril

Abstract:

This research examines the performance of a hybrid passive control device for enhancing the seismic response of steel frame structures. The device design comprises a damper which employs a viscoelastic material to control both shear and axial strain. In the design, energy is dissipated through the shear strain of a two-layer system of viscoelastic pads which are located between steel plates. In addition, viscoelastic blocks have been included on either side of the main shear damper which obtains compressive strains in the viscoelastic blocks. These dampers not only dissipate energy but also increase the stiffness of the steel frame structure, and the degree to which they increase the stiffness may be controlled by the size and shape. In this research, the cyclical behavior of the damper was examined both experimentally and numerically with finite element modeling. Cyclic loading results of the finite element modeling reveal fundamental characteristics of this hybrid viscoelastic damper. The results indicate that incorporating a damper of the design can significantly improve the seismic performance of steel frame structures.

Keywords: Cyclic loading, energy dissipation, hybrid damper, passive control system, viscoelastic damper.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1132591

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 449

References:


[1] Karavasilis TL, Bazeos N, Beskos DE. Drift and ductility estimates in regular steel MRF subjected to ordinary ground motions: a design-oriented approach. Earthquake Spectra. 2008 May;24(2):431-51.
[2] Karavasilis TL, Bazeos N, Beskos DE. Estimation of seismic drift and ductility demands in planar regular X‐braced steel frames. Earthquake Engineering & Structural Dynamics. 2007 Dec 1;36(15):2273-89.
[3] CEN. EN 1998-1, Eurocode 8: Design of structures for earthquake resistance. Part 1: General rules, seismic actions and rules for buildings. European Committee for Standardization; 2004.
[4] Mazzolani FM. Steel and composite structures in European seismic areas: Research, codification, design, and applications. Earthquake Spectra. 2003 May;19(2):415-52.
[5] Ramirez SM, Miranda E. Building-specific loss estimation methods & tools for simplified performance-based earthquake engineering, John A. Blume Earthquake Engineering Research Center 2009; Stanford Univ., Report No. 171.
[6] Wada A. Seismic design for resilient society. Keynote lecture. InJoint proceedings: 7th International conference on urban earthquake engineering and 5th int. conf. on earthquake engineering, Tokyo 2010 Mar (pp. 3-5).
[7] Charney FA, Ibrahim YE. New visco-plastic passive energy device. InProc. of 13th World Conference on Earthquake Engineering 2004 Aug 1.
[8] Li C, Reinhorn AM. Experimental and Analytical Investigation of Seismic Retrofit of Structures with Supplemental Damping: Part III-Viscous Damping Walls.
[9] Dassault Systemes Simulia Corp. ABAQUS/Standard User's Manual, Version 6.12; Dassault Systèmes: Providence, RI, USA, 2012.
[10] Mehrabi M, Suhatril M, Ibrahim Z, Ghodsi S, Khatibi H. Modeling of a viscoelastic damper and its application in structural control. PloS one. 2017;12(6):e0176480.