考虑几何非线性的Pall型摩擦阻尼器滞回特性分析  

THE ANALYSIS OF HYSTERETIC BEHAVIOR OF PALL-TYPED FRICTIONAL DAMPERS CONSIDERING GEOMETRY NONLINEARITY

作　　者：吴斌[1] 张纪刚[1] 欧进萍[1] 

机构地区：[1]哈尔滨工业大学土木工程学院,哈尔滨150090

出　　处：《工程力学》2003年第1期21-26,47,共7页Engineering Mechanics

基　　金：国家自然科学基金(59908002);哈尔滨工业大学科学研究基金(HIT200080);国家杰出青年科学资助项目(59625815)

摘　　要：从Pall摩擦阻尼器四连杆机构的几何非线性变形特征出发,分析支撑屈曲力、支撑刚度、滑动摩擦力对一种改进的Pall摩擦阻尼器T形芯板摩擦阻尼器的滞回特性以及支撑的受力特点的影响。一方面从分析方法上更严密地论证了T形芯板(或Pall)摩擦阻尼器的滞回特性不受支撑屈曲力影响这一结论。另一方面也揭示出一些新的规律:支撑的拉力在阻尼器起滑后并不保持为一常数,而是呈显著增加趋势;支撑的最大拉力与支撑刚度关系密切,相同摩擦力的条件下,支撑刚度越大,支撑的最大拉力越大。Based on the geometry nonlinearity of four-link mechanism of Pall frictional damper (PFD), the influence of buckling force of braces, brace stiffness and slip force on the hysteretic behavior of an improved PFD T-shaped cone plate frictional damper (TFD) is analyzed. On the one hand, it is verified strictly that the hysteretic behavior of TFD (or PFD) is not influenced by the buckling force of braces. On the other hand, some new phenomena are revealed. Firstly, the tension force of the braces does not keep constant but increases remarkably after the slipping of TFD. Secondly, the maximum tension force of the braces has relationship with brace stiffness, and the greater is the brace stiffness, the greater the maximum tension force of the braces is.

关 键 词：几何非线性 PALL型摩擦阻尼器 耗能减振 滞回特性 支撑刚度 结构性能设计 抗震设计 

分 类 号：TU352.11[建筑科学—结构工程]