高阻尼黏弹性橡胶连梁阻尼器力学性能试验研究

黏弹性橡胶阻尼器是一种兼具黏滞性和弹性两种特性的阻尼器，耗能能力良好，可以同时为结构提供附加刚度和附加阻尼。通过对高阻尼黏弹性橡胶连梁阻尼器进行循环加载试验，研究了其基本力学性能，分析了该阻尼器在低周疲劳加载和高周疲劳加载下的基本力学特性。研究结果表明：高阻尼黏弹性橡胶连梁阻尼器的耗能能力优良；该阻尼器的储存刚度、损失刚度、损失系数受变形幅值的影响较大，受加载频率影响较小；等效阻尼系数与频率呈现反比例函数关系；该阻尼器的基本力学性能在低周和高周疲劳加载下呈现出较明显的衰减。

Experimental study on high-damping viscoelastic rubber coupling beam damper

Viscoelastic rubber dampers provide both elasticity and viscidity, as well as satisfactory energy dissipation capacity, which could increase the stiffness and damping of the structures. In this study, tests on the high-damping viscoelastic rubber coupling beam damper were carried out, focusing on the basic mechanical properties of the damper, including the low and high cycle fatigue performance of the viscoelastic rubber damper. Major conclusions obtained from this study are as follows: the high-damping viscoelastic rubber coupling beam damper presents the satisfactory energy dissipation capacity; the storage stiffness, loss stiffness and loss coefficient are obviously affected by the loading amplitude, while the influence of loading frequency is rather negligible; the equivalent damping coefficient presented inversely-proportional relationship with loading amplitude and frequency. The mechanical properties of the damper exhibits notable degradation when subjected to low cycle and high cycle fatigue tests.