Abstract In this paper, the energy absorption system of a steel dual-ring damper (SDRD) is presented and its cyclic behavior is studied analytically and numerically. The energy dissipation mechanism of the SDRD occurs through the formation of moment plastic hinges in steel rings. The purpose of this study is to provide an analytical relationship for estimating the yield strength, yield displacement, and elastic stiffness of the proposed SDRDs. An analytical relationship is presented for calculating the elastic stiffness of SDRDs using the structural analysis method. Also, using plastic analysis and considering the mechanism of plastic hinge formation, a relation has been obtained for estimating the yield strength and yield displacement of SDRDs. Extensive parametric studies have been carried out using a nonlinear finite element method to examine the accuracy of the obtained analytical relationships. The parametric studies include investigating the influence of thickness parameters as well as the inner and outer ring diameters of SDRDs. Nonlinear static analysis is employed to analyze finite element (FE) models under cyclic loading. Also, validation of the results of the finite element models is performed with experimental specimens. There is a good agreement between the results of yielding capacity, yielding displacement, and elastic stiffness of the analytical relationship and FE models parametric studies. The results of the parametric models and the proposed relationship reveal that with elevation of the steel ring diameter, the energy dissipation has increased. Also, as the diameter to thickness (D/t) ratio increases, ductility and equivalent viscous damping ratio are reduced.

中文翻译：

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带有钢制双环阻尼器 (SDRD) 的能量耗散系统的循环行为

摘要 本文介绍了钢双环阻尼器（SDRD）的能量吸收系统，并对其循环行为进行了解析和数值研究。SDRD 的能量耗散机制是通过钢环中弯矩塑性铰的形成而发生的。本研究的目的是为估计所提出的 SDRD 的屈服强度、屈服位移和弹性刚度提供分析关系。提出了使用结构分析方法计算 SDRD 弹性刚度的解析关系。此外，使用塑性分析并考虑塑性铰形成的机制，已经获得了用于估计 SDRD 的屈服强度和屈服位移的关系。已经使用非线性有限元方法进行了广泛的参数研究，以检查所获得的解析关系的准确性。参数研究包括研究 SDRD 的厚度参数以及内外环直径的影响。非线性静态分析用于分析循环载荷下的有限元 (FE) 模型。此外，有限元模型的结果验证是用实验样本进行的。分析关系的屈服能力、屈服位移和弹性刚度的结果与有限元模型参数研究的结果非常吻合。参数模型的结果和所提出的关系表明，随着钢圈直径的增加，能量耗散增加。还，