PFD-SMA支撑体系滞回性能  

Hysteretic Behavior of Advanced PFD-SMA Frictional Damping Brace Systems

作　　者：张纪刚[1,2] 卢爱贞[3] 欧进萍[2] 

机构地区：[1]青岛理工大学土木工程学院,青岛266033 [2]大连理工大学海岸和近海工程国家重点实验室,大连116023 [3]北京工业大学建筑工程学院,北京100124

出　　处：《北京工业大学学报》2011年第11期1713-1719,1742,共8页Journal of Beijing University of Technology

基　　金：国家自然科学基金资助项目(50809032);海岸和近海工程国家重点实验室开放基金(LP1009);山东省优秀中青年科学家科研奖励基金(博士基金)(BS2010HZ008);中国博士后科学基金第二批特别资助项目(200902540)

摘　　要：对传统的Pall摩擦阻尼支撑体系进行了改进,充分利用Pall摩擦阻尼器和形状记忆合金的优点提出了一种Pall摩擦阻尼器和形状记忆合金(Pall-typed frictional damper-shape memory alloy,PFD-SMA)支撑体系.考虑几何非线性,采用ANSYS程序,根据摩擦力和SMA的刚度、支撑长度、最大恢复应变及弹性模量等,分析了PFD-SMA支撑体系的滞回性能.分析结果表明该体系具有较好的耗能能力,即使在抱死的情况下SMA支撑本身也会耗能;摩擦力与SMA刚度、长度以及弹性模量对其滞回性能都有影响.同时,该体系可因为SMA的超弹性、形状记忆效应而具有双重自复位功能.A traditional Pall friction damping brace system is improved by a Pall-typed frictional damper-shape memory alloy（PFD-SMA ） brace system, which makes full use of PFD and the advantages of SMA. The system has the energy dissipation ability and self-resetting function. The influences of SMA＇ s stiffness, slip force of the Pall-typed damper, maximum recovery strain, elasticity modulus, and length of SMA brace are analyzed. Results show that the PFD-SMA frictional brace system has the same energy dissipation with an origin Pall brace system, even in the case of hugging SMA brace can consume energy by itself. The system has a dual self-resetting function by SMA＇s super-elastic performance and shape memory effect.

关 键 词：形状记忆合金 PALL型摩擦阻尼器 耗能减震 几何非线性 

分 类 号：TU311[建筑科学—结构工程]