扇形铅粘弹性阻尼器恢复力模型及设计方法研究
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摘要
依据扇形铅粘弹性阻尼器组成材料的特性,给出了阻尼器的构造参数与恢复力学模型之间的关系,推导出该阻尼器恢复力模型公式,给出了阻尼器的设计方法。基于扇形铅粘弹性阻尼器的性能试验结果,对比分析了理论推导结果与试验结果,分析结果表明:扇形铅粘弹性阻尼器的力学性能主要取决于橡胶和铅芯两种材料,可用双线性恢复力学模型对其进行描述;该阻尼器滞回曲线及设计值与试验值吻合度较好,推导的恢复力模型公式合理可行。
Based on the material characteristics of the sector lead viscoelastic dampers( SLVD),the relationship between appropriate structural parameters and restoring force equation was given,and the restoring force model of SLVD was derived. The design method of the damper was given out. The performances of the damper were tested under low frequency cyclic load. The results were compared with those of the numerical simulation and the test. The investigation results indicate that: the mechanical properties of the sector lead viscoelastic damper are mainly depended on rubber and lead and the symmetric bilinear model can be used to describe the restoring force of the damper. The experimental and numerical simulation results of SLVD hysteretic curve are in good agreement. It is feasible to adopt the given model to simulate the damper element.
Based on the material characteristics of the sector lead viscoelastic dampers( SLVD),the relationship between appropriate structural parameters and restoring force equation was given,and the restoring force model of SLVD was derived. The design method of the damper was given out. The performances of the damper were tested under low frequency cyclic load. The results were compared with those of the numerical simulation and the test. The investigation results indicate that: the mechanical properties of the sector lead viscoelastic damper are mainly depended on rubber and lead and the symmetric bilinear model can be used to describe the restoring force of the damper. The experimental and numerical simulation results of SLVD hysteretic curve are in good agreement. It is feasible to adopt the given model to simulate the damper element.
引文
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[3]周云,徐昕,邹征敏,等.扇形铅粘弹性阻尼器的设计及数值仿真分析[J].土木工程与管理学报,2011,28(2):1-6.ZHOU Yun,XU Xin,ZOU Zhen-min,et al.Design and numerical simulation analysis of sector lead viscoelastic damper[J].Journal of Civil Engineering and Management,2011,28(2):1-6.
[4]李冀龙,欧进萍.铅剪切阻尼器的阻尼力模型与设计[J].工程力学,2006,23(4):67-73.LI Ji-long,OU Jin-ping.Damping force models and designs of lead shear dampers[J].Engineering Mechanics,2006,23(4):67-73.
[5]李冀龙.金属阻尼器的阻尼力模型[D].哈尔滨:哈尔滨工业大学,2002.
[6]张少实,庄茁.复合材料与粘弹性力学[M].北京:机械工业出版社,2007.
[7]周福霖.工程结构减震控制[M].北京:地震出版社,1997.
[8]周云,徐赵东,邓雪松.铅粘弹性阻尼器的计算模型.地震工程与工程振动[J].2000,20(1):120-124.ZHOU Yun,XU Zhao-dong,DENG Xue-song.Calculating models of lead viscoelastic dampers[J].Earthquake Engineering and Engineering Vibration,2000,20(1):120-124.
[9]周云.粘弹性阻尼减震结构设计[M].武汉:武汉理工大学出版社,2006.
[10]唐家祥.建筑结构基础隔震[M].武汉:华中理工大学出版社,1993.
[11]徐昕.新型扇形铅粘弹性阻尼器性能及应用研究[D].广州:广州大学,2012.
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