压电变摩擦阻尼器减振结构的数值分析
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摘要
基于对压电陶瓷驱动器和金属摩擦阻尼器力学性能的分析,将两者结合并提出智能压电摩擦阻尼器,通过合理设定压电驱动器电场强度与阻尼器相对位移和速度的系数,提出了位移和速度相关型、具有拟粘滞或拟摩擦阻尼力模型的压电摩擦阻尼器,并建立了相应的半主动控制的阻尼力规则。对两自由度结构地震反应的压电摩擦阻尼半主动控制和多种被动阻尼控制进行了分析和比较。结果表明:半主动和拟粘滞型压电摩擦阻尼均对结构的位移和加速度反应有良好的控制效果。
Based on the mechanical properties analysis of piezoelectric ceramic actuator and metal friction damper, the smart piezoelectric-friction damper is introduced. Pseudo-viscous or pseudo-frictional piezoelectric-friction damper is put forward which is either displacement dependent or velocity dependent by properly setting the relationship between the electrical intensity of piezoelectric ceramic actuator and the relative displacement or velocity of damper, and the relative semi-active control rules are also discussed. Under earthquake excitations, for a two degrees of freedom system with piezoelectric-friction dampers, the analytical comparisons between semi-active control and several types of passive damping control of structural response show that semi-active and pseudo-viscous piezoelectric-friction dampers are both effective for reducing structural displacement and acceleration response.
Based on the mechanical properties analysis of piezoelectric ceramic actuator and metal friction damper, the smart piezoelectric-friction damper is introduced. Pseudo-viscous or pseudo-frictional piezoelectric-friction damper is put forward which is either displacement dependent or velocity dependent by properly setting the relationship between the electrical intensity of piezoelectric ceramic actuator and the relative displacement or velocity of damper, and the relative semi-active control rules are also discussed. Under earthquake excitations, for a two degrees of freedom system with piezoelectric-friction dampers, the analytical comparisons between semi-active control and several types of passive damping control of structural response show that semi-active and pseudo-viscous piezoelectric-friction dampers are both effective for reducing structural displacement and acceleration response.
引文
1Tong L,Sun D,A tluri S N.Sensing and actuating behaviors of piezoelectric layers with debonding in sm art beam s[J].Sm art M aterial and Structure.2001,10:713—723
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3W ang S Y,Q uek S T,Ang K K.V ibration control of sm art piezoelectric com posite[J].Sm art M aterial and Structure,2001,10:637-644
4D upont P,Stokes A.Sem i-active Control of Friction D am pers[C].Proceedings of the34th Conference on D ecision&Cont-rol,IEEE,1995,3331-3336
5Y ang J N,Agrawal A K.Sem i-active hybrid control system s for non-linear buildings against near-field earthquakes[J].Eng-ineering Structures,2002,24:271-280
6欧进萍等.智能型压电-摩擦耗能器[J].地震工程与工程振动,2002,20(1):81-86
7瞿伟廉,陈朝晖,徐幼麟.压电材料智能摩擦阻尼器对高耸钢塔结构风振反应的半主动控制[J].地震工程与工程振动,2000,20(1):94-99
8Chen G D,G arrett G T,Chen C Q,Cheng F Y.Characteri-zation of a prototype piezoelectric friction dam per for earthqu-ake response reduction of a1/4-scale steel fram e[C].Procee-dings of the US-Korea W orkshop on Sm art Infrastructural Sys-tem s,2002,14:21-38
9Chen G D,Chen C Q.Behavior of piezoelectric friction dam-pers under dynam ic loading[J].Sm art Structures and M ateri-als2000:Sm art System s for Bridges,Structures,and H ighways,S.C.Liu,Editor,Proceedings of SPIE,2000,3988:54-63
2Furutani K,Furuichi M,M ohri N.Coarse m otion of'seal m ec-hanism’with three degrees of freedom by using difference of frictional force[J].Sm art M aterial and Structure,2001,12:2147-2153
3W ang S Y,Q uek S T,Ang K K.V ibration control of sm art piezoelectric com posite[J].Sm art M aterial and Structure,2001,10:637-644
4D upont P,Stokes A.Sem i-active Control of Friction D am pers[C].Proceedings of the34th Conference on D ecision&Cont-rol,IEEE,1995,3331-3336
5Y ang J N,Agrawal A K.Sem i-active hybrid control system s for non-linear buildings against near-field earthquakes[J].Eng-ineering Structures,2002,24:271-280
6欧进萍等.智能型压电-摩擦耗能器[J].地震工程与工程振动,2002,20(1):81-86
7瞿伟廉,陈朝晖,徐幼麟.压电材料智能摩擦阻尼器对高耸钢塔结构风振反应的半主动控制[J].地震工程与工程振动,2000,20(1):94-99
8Chen G D,G arrett G T,Chen C Q,Cheng F Y.Characteri-zation of a prototype piezoelectric friction dam per for earthqu-ake response reduction of a1/4-scale steel fram e[C].Procee-dings of the US-Korea W orkshop on Sm art Infrastructural Sys-tem s,2002,14:21-38
9Chen G D,Chen C Q.Behavior of piezoelectric friction dam-pers under dynam ic loading[J].Sm art Structures and M ateri-als2000:Sm art System s for Bridges,Structures,and H ighways,S.C.Liu,Editor,Proceedings of SPIE,2000,3988:54-63
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