具有复阻尼特征板式变摩擦阻尼器滞回性能研究  

Hysteresis performance of a plate type of variable friction damper with complex damping characteristics

作　　者：彭凌云[1] 常健 苏经宇 秦丽[2] 

机构地区：[1]北京工业大学工程抗震与结构诊治北京市重点实验室,北京100124 [2]湖北文理学院建筑工程学院,湖北襄阳441053

出　　处：《振动与冲击》2017年第18期189-195,共7页Journal of Vibration and Shock

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)

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。A plate type of variable friction damper was proposed in order to make the damping devices be provided with complex damping characteristics. Based on static equilibrium conditions,the theoretical formulas for the hysteretic damper model according to its geometric and physical parameters were derived. And the hysteretic curve of the damper was simulated using the nonlinear finite element analysis. Some low period reciprocating tests on the hysteretic behavior of the damper were conducted. The key parameters affecting the hysteresis performance based on the above methods were investigated. The results show that the hysteresis curves of the damper are symmetrical triangles with respect to the origin and locate in first and third quadrants. The hysteresis curves by both the theoretical formulas and numerical simulation are in good agreement with the experimental results. The key factors affecting the damper hysteretic performance are the spring stiffness,two friction coefficients and an angle. It is shown that the hysteresis curves of the damper have obviously complex damping characteristics. The results by both the theoretical formulas and numerical simulation of the hysteretic model can be used as a preliminary method for the damper designing.

关 键 词：复阻尼 变摩擦阻尼器 理论公式 性能试验 数值模拟 

分 类 号：TU352[建筑科学—结构工程]