Effects of Brace-viscous Damper System on the Dynamic Response of Steel Frames
محل انتشار: ماهنامه بین المللی مهندسی، دوره: 33، شماره: 5
سال انتشار: 1399
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 401
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شناسه ملی سند علمی:
JR_IJE-33-5_002
تاریخ نمایه سازی: 25 خرداد 1399
چکیده مقاله:
In this study, the effects of three different viscous damper configurations, chevron, diagonal and toggle, as well as brace stiffness on the performance of brace-viscous damper system in various steel frams under different earthquake records were investigated. A finite element software, ANSYS, is exploited to develop the numerical models. To verify the numerical simulations, their results were compared with those of the experimental studies in the literature. The results show the reduction in the base shear force given by the toggle configuration is larger than that due to the chevron and diagonal configurations. Regarding the brace stiffness (area), for a reference damping coefficient of 500 N.m/s, a 54% increase in the brace area (from 42 to 91.8 mm2) results in a 21.26, 38.61, and 17.57% reduction in the structure displacement response for the diagonal, chevron, and toggle configurations, respectively. Further, using the results of the numerical simulations, we proposed the spatially-optimized distribution of the brace-viscous damper system.
کلیدواژه ها:
brace ، viscous Damper System Damper Configuration Tabas Earthquake ANSYS Dynamic Response
نویسندگان
A. Pourzangbar
Dipartimento di Ingegneria, Civile, Edile e di Architettura, Università Politecnica delle Marche, Italy
M. Vaezi
Department of maritime engineering, Amirkabir University of Technology, Tehran, Iran
S. M. Mousavi
Department of Civil Engineering, National Taiwan University, Taipei, Taiwan (R.O.C)
A. Saber
Dipartimento di Ingegneria, Civile, Edile e di Architettura, Università Politecnica delle Marche, Italy