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Title

MODELING IMPACT DAMPER IN BUILDING FRAMES USING GAP ELEMENT

Pages

 Start Page 113 | End Page 125

Abstract

 Main effective factor in IMPACT DAMPERs to control vibration is to create disruption in structural oscillation amplitude using small forces induced by auxiliary masses to reduce strong vibrations. So far, modeling of the IMPACT DAMPER has been conducted solely through MATLAB software. Naturally, the functional aspects of this software are limited in research and development aspects compared to the common programs such as SAP2000 and ETABS. In this paper, a SINGLE DEGREE OF FREEDOM SYSTEM, SDOF, is first modeled under harmonic loading with maximum amplitude of 0.4g in SAP2000 PROGRAM. Then, the results are compared with numerical model. In this way, the proposed model is validated and the SDOF SYSTEM equipped with an IMPACT DAMPER is investigated under the Kobe and Northridge earthquake records using SAP2000 model. Based on obtained results, the SYSTEM equipped with an IMPACT DAMPER under the Kobe and Northridge earthquakes for structures considered in this study would have better seismic performance in which maximum displacements are reduced 6% and 33% respectively. Finally, IMPACT DAMPERs are modeled in a 4-story building structure with concentric bracing leading to 12% reduction in story drifts.

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