具有复阻尼特征板式变摩擦阻尼器滞回性能研究

发布时间：2019-06-02 18:18

【摘要】：为使减震装置具有复阻尼特征,提出一种板式变摩擦阻尼器。基于静力平衡条件推导了根据阻尼器几何、物理参数确定其滞回模型的理论公式,采用非线性有限元对阻尼器在静力往复作用下的滞回曲线进行了模拟,通过低周往复试验进行了阻尼器滞回性能试验研究,基于上述方法对影响滞回性能的关键参数进行了研究。研究结果:该阻尼器的滞回曲线为位于一、三象限、关于原点对称的三角形,理论公式和数值模拟得到的滞回曲线与试验数据吻合得较好,影响阻尼器滞回性能的关键因素是弹簧刚度、2个摩擦因素和1个角度。结果表明该阻尼器的滞回曲线具有明显的复阻尼特征,滞回模型的理论公式和数值模拟结果可用于指导此类阻尼器的设计。
[Abstract]:In order to make the damping device have complex damping characteristics, a plate variable friction damper is proposed. Based on the static equilibrium condition, the theoretical formula for determining the hysteretic model according to the geometry and physical parameters of the dampers is derived, and the hysteretic curve of the dampers under static reciprocating action is simulated by nonlinear finite element method. The hysteretic performance of dampers is studied by low cycle reciprocating test, and the key parameters affecting hysteretic performance are studied based on the above methods. The results show that the hysteretic curve of the damper is located in the first and third quadrants. For the triangle with symmetrical origin, the theoretical formula and the hysteretic curve obtained by numerical simulation are in good agreement with the experimental data. The key factors affecting the hysteretic performance of dampers are spring stiffness, two friction factors and one angle. The results show that the hysteretic curve of the damper has obvious complex damping characteristics, and the theoretical formula and numerical simulation results of the hysteretic model can be used to guide the design of the dampers.
【作者单位】：北京工业大学工程抗震与结构诊治北京市重点实验室;湖北文理学院建筑工程学院;
【基金】：国家自然科学基金资助(51478023;51208188) 北京市教委科技计划面上项目(KM201110005021)
【分类号】：TU352.1

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