Numerical Investigation of Cyclic Behavior of Angled U-shaped Yielding Damper on Steel Frames

IF 1.4 4区工程技术 Q3 ENGINEERING, CIVIL

Periodica Polytechnica-Civil Engineering Pub Date : 2023-11-06 DOI:10.3311/ppci.23213

Kambiz Cheraghi, Mehrzad TahamouliRoudsari, Sasan Kiasat, Javad Esfandiari

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引用次数: 0

Abstract

Yielding dampers are often selected as a cost-effective solution for improving steel structures compared to other energy dissipation systems. The objective of this research study was to investigate the cyclic behavior of the angled U-shaped yielding damper (AUSYD) on a steel frame using numerical method. The numerical model was first verified using two experimental samples. Next, the influence of the number of dampers on the cyclic behavior of the steel frame was examined. The parametric model outcomes included energy dissipation, elastic stiffness, strength, and equivalent viscous damping ratio (EVDR). Additionally, an analytical equation was proposed for calculating the ultimate strength of the AUSYD, which correlated well with the experimentally obtained results. The study findings revealed that the increase in elastic stiffness and strength of the frame equipped with the AUSYD was nearly equivalent to the sum of the elastic stiffness and strength of the bare frame and its supplementary dampers. Furthermore, the results showed that models with 8 to 12 dampers had comparable energy dissipation and EVDR. Adding 8 dampers to the frame increased the energy dissipation and damping coefficient of the frame by 42% and 67%, respectively.

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钢框架倾斜u型屈服阻尼器循环性能的数值研究

与其他耗能系统相比，屈服阻尼器通常被选为改善钢结构的经济有效的解决方案。本研究的目的是利用数值方法研究钢框架上的角度u型屈服阻尼器(AUSYD)的循环性能。首先用两个实验样本对数值模型进行了验证。其次，研究了阻尼器个数对钢框架循环性能的影响。参数化模型结果包括能量耗散、弹性刚度、强度和等效粘性阻尼比(EVDR)。此外，还提出了一种计算AUSYD极限强度的解析式，该解析式与实验结果吻合较好。研究结果表明，安装AUSYD的框架的弹性刚度和强度的增加几乎等于裸框架及其附加阻尼器的弹性刚度和强度的总和。此外，结果表明，8至12阻尼器的模型具有相当的能量耗散和EVDR。在车架上增加8个阻尼器，车架的耗能系数和阻尼系数分别提高42%和67%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Periodica Polytechnica-Civil Engineering 工程技术-工程：土木

CiteScore

3.40

自引率

16.70%

发文量

审稿时长

12 months

期刊介绍： Periodica Polytechnica Civil Engineering is a peer reviewed scientific journal published by the Faculty of Civil Engineering of the Budapest University of Technology and Economics. It was founded in 1957. Publication frequency: quarterly. Periodica Polytechnica Civil Engineering publishes both research and application oriented papers, in the area of civil engineering. The main scope of the journal is to publish original research articles in the wide field of civil engineering, including geodesy and surveying, construction materials and engineering geology, photogrammetry and geoinformatics, geotechnics, structural engineering, architectural engineering, structural mechanics, highway and railway engineering, hydraulic and water resources engineering, sanitary and environmental engineering, engineering optimisation and history of civil engineering. The journal is abstracted by several international databases, see the main page.