SMA复合摩擦阻尼器性能的试验研究
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摘要
利用形状记忆合金(SMA)的超弹性效应及高阻尼性能,结合传统Pall摩擦型阻尼器的特点,提出了一种SMA复合摩擦阻尼器。在建立阻尼器力学分析模型的基础上,对SMA复合摩擦阻尼器的性能进行了试验研究,分析了位移幅值、加载频率等对阻尼器的等效刚度、单位循环耗能和等效阻尼比的影响,并与理论分析结果进行了对比。研究表明,SMA复合摩擦阻尼器在加卸载循环下会形成比较稳定的滞回曲线,表明这种阻尼器具有良好的耗能能力。
Based on the superelastic property and high damping performance of shape memory alloy(SMA) as well as the behavior of Pall's friction damper,an SMA incorporated friction damper is proposed.After establishing the mechanical models of the damper,the behaviors of the SMA incorporated friction dampers are studied through experiments,from which the effects of displacement amplitudes and loading frequencies are taken into account.Working parameters,such as equivalent stiffness,energy dissipation capacity per cycle,and equivalent damping ratio of the damper are evaluated through experiments.A comparison is made between theoretical and experimental results.It is shown that stable hysteresis loops can be obtained under different loading and unloading cycles,and the SMA incorporated friction damper possesses a good energy dissipation performance.
Based on the superelastic property and high damping performance of shape memory alloy(SMA) as well as the behavior of Pall's friction damper,an SMA incorporated friction damper is proposed.After establishing the mechanical models of the damper,the behaviors of the SMA incorporated friction dampers are studied through experiments,from which the effects of displacement amplitudes and loading frequencies are taken into account.Working parameters,such as equivalent stiffness,energy dissipation capacity per cycle,and equivalent damping ratio of the damper are evaluated through experiments.A comparison is made between theoretical and experimental results.It is shown that stable hysteresis loops can be obtained under different loading and unloading cycles,and the SMA incorporated friction damper possesses a good energy dissipation performance.
引文
[1]Pall A S,Marsh C.Response of friction damped braced frames[J].Journal of the Structural Division,ASCE,1982,108(ST6):1313-1323.
[2]Pall A S,Pall R.Friction-damper used for seismic control of newand existing buildings in Canada[R].atc 17-1,Seminar on Seismic Isola-tion,Passive Energy Dissipation,and Active Control 1993,2:675(686.
[3]欧进萍,吴斌.摩擦型与软钢屈服型耗能器的性能与减振效果的试验比较[J].地震工程与工程振动,1995,15(3):73-87.
[4]吴斌,张纪刚,欧进萍.Pall型摩擦阻尼器的试验研究与数值分析[J].建筑结构学报,2003,24(4):7-12.
[5]瞿伟廉,李卓球,姜德生,等.智能材料-结构系统在土木工程中的应用[J].地震工程与工程振动,1999,19(3):87-95.
[6]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.
[7]赵连城,蔡伟,郑玉峰.合金的形状记忆效应与超弹性[M].北京:国防工业出版社,2002.
[8]王社良.形状记忆合金在结构控制中的应用[M].西安:陕西科学技术出版社,2000.
[9]李惠,毛晨曦.新型SMA耗能器及结构地震反应控制试验研究[J].地震工程与工程振动.2003,23(1):133-139.
[10]薛素铎,董军辉,卞小芳,李彬双.一种新型形状记忆合金阻尼器[J].建筑结构学报,2005,26(3):45-50.
[11]李忠献,陈海泉,刘建涛.应用SMA复合橡胶支座的桥梁隔振[J].地震工程与工程振动,2002,22(2):143-148.
[12]卞晓芳,薛素铎.SMA-MR复合型阻尼器[J].世界地震工程,2004,20(2):23-29.
[2]Pall A S,Pall R.Friction-damper used for seismic control of newand existing buildings in Canada[R].atc 17-1,Seminar on Seismic Isola-tion,Passive Energy Dissipation,and Active Control 1993,2:675(686.
[3]欧进萍,吴斌.摩擦型与软钢屈服型耗能器的性能与减振效果的试验比较[J].地震工程与工程振动,1995,15(3):73-87.
[4]吴斌,张纪刚,欧进萍.Pall型摩擦阻尼器的试验研究与数值分析[J].建筑结构学报,2003,24(4):7-12.
[5]瞿伟廉,李卓球,姜德生,等.智能材料-结构系统在土木工程中的应用[J].地震工程与工程振动,1999,19(3):87-95.
[6]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.
[7]赵连城,蔡伟,郑玉峰.合金的形状记忆效应与超弹性[M].北京:国防工业出版社,2002.
[8]王社良.形状记忆合金在结构控制中的应用[M].西安:陕西科学技术出版社,2000.
[9]李惠,毛晨曦.新型SMA耗能器及结构地震反应控制试验研究[J].地震工程与工程振动.2003,23(1):133-139.
[10]薛素铎,董军辉,卞小芳,李彬双.一种新型形状记忆合金阻尼器[J].建筑结构学报,2005,26(3):45-50.
[11]李忠献,陈海泉,刘建涛.应用SMA复合橡胶支座的桥梁隔振[J].地震工程与工程振动,2002,22(2):143-148.
[12]卞晓芳,薛素铎.SMA-MR复合型阻尼器[J].世界地震工程,2004,20(2):23-29.
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