结构振动的负刚度控制
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摘要
回顾与研究了结构振动负刚度控制的来源、作用及实现方式,以便为负刚度控制的实际工程应用打下基础.研究表明:主动控制力除了阻尼项外,主要体现出负刚度控制特性,且对减振效果起决定性的作用,而这正是经常使用的被动减振装置所无法体现的特性;基于磁流变阻尼器的半主动控制系统在很多情况下可以达到或接近主动控制的效果,也正是因为其能够实现负刚度控制特性.
The source,effect and realization of negative stiffness in structural vibration control system are reviewed in detail in the paper in order to lay a foundation for the actual engineering application of negative stiffness control.It is found that active control force mainly shows negative stiffness besides the damping components,and it determines the damping effect,which cannot be realized by the passive damping devices.Moreover,semi-active control system based on MR dampers can achieve or approach the control performance of active control for it can realize the negative stiffness control.
The source,effect and realization of negative stiffness in structural vibration control system are reviewed in detail in the paper in order to lay a foundation for the actual engineering application of negative stiffness control.It is found that active control force mainly shows negative stiffness besides the damping components,and it determines the damping effect,which cannot be realized by the passive damping devices.Moreover,semi-active control system based on MR dampers can achieve or approach the control performance of active control for it can realize the negative stiffness control.
引文
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[14]陈政清,汪志昊.基于能量回收的土木工程结构振动控制[J].建筑科学与工程学报,2009,26(2):9-14.
[2]欧进萍.结构振动控制—主动、半主动和智能控制[M].北京:科学出版社,2003.
[3]Li H,Ou J P.A design approach for semi-active and smartbase-isolated buildings[J].Structural Control and HealthMonitoring,2006,13:660-681.
[4]张春巍,欧进萍.结构振动AMD控制系统主动控制力特征指标与分析[J].工程力学,2007,24(5):1-9.
[5]汪志昊,陈政清.隔震桥梁地震反应的最优主动控制力特性研究[J].振动工程学报,2011,24(2):175-180.
[6]Iemura H,Pradono M H.Application of pseudo negativestiffness control to the benchmark cable-stayed bridges[J].Journal of Structural Control,2003,10(3):187-203.
[7]Iemura H,Pradono M H.Simple algorithm for semi-activeseismic response control of cable-stayed bridges[J].Earth-quake Engineering and Structural Dynamics,2005,34(4):10-25.
[8]Iemura H,Igarashi A,Pradono M H,et al.Negative stiff-ness friction damping for seismically isolated structures[J].Structural Control and Health Monitoring,2006,13(2-3):775-791.
[9]Pradono M H,Iemura H,Igarashi A,et al.Passively con-trolled MR damper in the benchmark structural controlproblem for seismically excited highway bridge[J].Struc-tural Control and Health Monitoring,2009,16(6):626-638.
[10]Li H,Liu M,Ou J P.Negative stiffness characteristics ofactive and semi-active control systems for stay cables[J].Structural Control and Health Monitoring,2008,15(2):120-142.
[11]Ou J P,Li H.Analysis of capability for semi-active or pas-sive damping systems to achieve the performance of activecontrol systems[J].Structural Control and Health Monito-ring,2010,17(7):778-794.
[12]Wang Z H,Chen Z Q.Feasibility study of a self-poweredmagnetorheological damper for vibration control of a staycable[C]//Advances in Environmental Vibration.Bei-jing:Science Press,2011:875-882.
[13]周亚刚,孙利民.斜拉索-三单元Maxwell阻尼器系统的复模态分析[J].同济大学学报:自然科学版,2006,34(1):7-12.
[14]陈政清,汪志昊.基于能量回收的土木工程结构振动控制[J].建筑科学与工程学报,2009,26(2):9-14.
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