颗粒阻尼器减震控制的数值模拟
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摘要
基于离散单元法,建立了颗粒阻尼器对多自由度结构进行减震控制的数值模拟方法,并介绍了系统参数的取值方法.该方法采用合理的计算时步和高效的接触检测算法,能较好地模拟颗粒间以及颗粒与容器壁之间的相互作用.开展了附加颗粒阻尼器的多层框架的振动台试验,通过试验结果与数值模拟结果的对比发现两者吻合良好,说明该数值方法可以较好地模拟颗粒阻尼器的减震控制效果.
Based on the discrete element method,a numerical simulation method for vibration control effects of particle dampers is established,and the way to determine the corresponding system parameters is introduced.A suitable particle damper system is modeled.On the basis of a reasonable time step and an efficient contact detection algorithm,the interaction between particles and the container is simulated.A shaking table test of a multi-storey frame with particle damper system is carried out.A comparative study show that the test results and the simulation results agree well with each other,which demonstrates that the proposed numerical simulation method can yield reasonabe control effect of particle dampers.
Based on the discrete element method,a numerical simulation method for vibration control effects of particle dampers is established,and the way to determine the corresponding system parameters is introduced.A suitable particle damper system is modeled.On the basis of a reasonable time step and an efficient contact detection algorithm,the interaction between particles and the container is simulated.A shaking table test of a multi-storey frame with particle damper system is carried out.A comparative study show that the test results and the simulation results agree well with each other,which demonstrates that the proposed numerical simulation method can yield reasonabe control effect of particle dampers.
引文
[1]Naeim F,Lew M,Carpenter L D,et al.Performance of tallbuildings in Santiago,Chile during the 27 February 2010offshore Maule,Chile earthquake[J].The Structural Designof Tall and Special Buildings,2011,20(1):1.
[2]鲁正,吕西林,闫维明.颗粒阻尼器减震控制的试验研究[J].土木工程学报,2012,45(增刊1):243.LU Zheng,LU Xilin,YAN Weiming.Experimentalinvestigation into the vibration control effects of particledampers[J].China Civil Engineering Journal,2012,45(Supplement 1):243.
[3]Papalou A,Masri S F.Response of impact dampers withgranular materials under random excitation[J].EarthquakeEngineering&Structural Dynamics,1996,25(3):253.
[4]Friend R D,Kinra V K.Particle impacting damping[J].Journal of Sound and Vibration,2000,233(1):93.
[5]胡溧,黄其柏,许智生.颗粒阻尼的回归分析研究[J].中国机械工程,2008,19(23):2834.HU Li,HUANG Qibai,XU Zhisheng.Regression analysis ofparticle damping[J].Chinese Mechanical Engineering,2008,19(23):2834.
[6]蒋华,陈前.恢复力曲面法在颗粒阻尼器研究中的应用[J].振动、测试与诊断,2007,27(3):228.JIANG Hua,CHEN Qian.Application of resoting forcesuperface method to particle damping research[J].Journal ofVibration,Measurement&Diagnosis,2007,27(3):228.
[7]刘雁梅,黄协清,陈天宁.非阻塞性颗粒阻尼加筋板振动功率流的研究[J].西安交通大学学报,2001,35(1):61.LIU Yanmei,HUANG Xieqing,CHEN Tianning.Study onpower flow of a stiffened plate with non-obstructive particledamping[J].Journal of Xi’an Jiaotong University,2001,35(1):61.
[8]Cundall P A,Strack O.A distinct element model for granularassemblies[J].Geotechnique,1979,29:47.
[9]Masri S F,Ibrahim A M.Stochastic excitation of a simplesystem with impact damper[J].Earthquake Engineering&Structural Dynamics,1973,1(4):337.
[10]Tavarez F A.Discrete element method for modeling solid andparticulate materials[D].Madison:Engineering Mechanics ofUniversity of Wisconsin-Madison,2005.
[11]Jensen R P,Bosscher P J,Plesha M E.DEM simulation ofgranular media-structure interface:effects of surfaceroughness and particle shape[J].International Journal forNumerical and Analytical Methods in Geomechanics,1999(23):531.
[12]Munjiza A,Andrews K R F.NBS contact detection algorithmfor bodies of similar size[J].International Journal forNumerical Methods in Engineering,1998,43:131.
[13]Wong C X,Daniel M C,Rongong J A.Energy dissipationprediction of particle dampers[J].Journal of Sound andVibration,2009,319(1/2):91.
[14]葛藤,贾智宏,周克栋.钢球和刚性平面弹塑性正碰撞恢复系数研究[J].工程力学,2008,25(6):209.GE Teng,JIA Zhihong,ZHOU Kedong.Research onelastoplastic normal impact of steel spheres against a rigid plane[J].Engineering Mechanics,2008,25(6):209.
[15]Xia Z W,Liu X D,Shan Y C,et al.Coupling simulationalgorithm of discrete element method and finite element methodfor particle damper[J].Journal of Low Frequency Noise,Vibration and Active Control,2009,28(3):197.
[2]鲁正,吕西林,闫维明.颗粒阻尼器减震控制的试验研究[J].土木工程学报,2012,45(增刊1):243.LU Zheng,LU Xilin,YAN Weiming.Experimentalinvestigation into the vibration control effects of particledampers[J].China Civil Engineering Journal,2012,45(Supplement 1):243.
[3]Papalou A,Masri S F.Response of impact dampers withgranular materials under random excitation[J].EarthquakeEngineering&Structural Dynamics,1996,25(3):253.
[4]Friend R D,Kinra V K.Particle impacting damping[J].Journal of Sound and Vibration,2000,233(1):93.
[5]胡溧,黄其柏,许智生.颗粒阻尼的回归分析研究[J].中国机械工程,2008,19(23):2834.HU Li,HUANG Qibai,XU Zhisheng.Regression analysis ofparticle damping[J].Chinese Mechanical Engineering,2008,19(23):2834.
[6]蒋华,陈前.恢复力曲面法在颗粒阻尼器研究中的应用[J].振动、测试与诊断,2007,27(3):228.JIANG Hua,CHEN Qian.Application of resoting forcesuperface method to particle damping research[J].Journal ofVibration,Measurement&Diagnosis,2007,27(3):228.
[7]刘雁梅,黄协清,陈天宁.非阻塞性颗粒阻尼加筋板振动功率流的研究[J].西安交通大学学报,2001,35(1):61.LIU Yanmei,HUANG Xieqing,CHEN Tianning.Study onpower flow of a stiffened plate with non-obstructive particledamping[J].Journal of Xi’an Jiaotong University,2001,35(1):61.
[8]Cundall P A,Strack O.A distinct element model for granularassemblies[J].Geotechnique,1979,29:47.
[9]Masri S F,Ibrahim A M.Stochastic excitation of a simplesystem with impact damper[J].Earthquake Engineering&Structural Dynamics,1973,1(4):337.
[10]Tavarez F A.Discrete element method for modeling solid andparticulate materials[D].Madison:Engineering Mechanics ofUniversity of Wisconsin-Madison,2005.
[11]Jensen R P,Bosscher P J,Plesha M E.DEM simulation ofgranular media-structure interface:effects of surfaceroughness and particle shape[J].International Journal forNumerical and Analytical Methods in Geomechanics,1999(23):531.
[12]Munjiza A,Andrews K R F.NBS contact detection algorithmfor bodies of similar size[J].International Journal forNumerical Methods in Engineering,1998,43:131.
[13]Wong C X,Daniel M C,Rongong J A.Energy dissipationprediction of particle dampers[J].Journal of Sound andVibration,2009,319(1/2):91.
[14]葛藤,贾智宏,周克栋.钢球和刚性平面弹塑性正碰撞恢复系数研究[J].工程力学,2008,25(6):209.GE Teng,JIA Zhihong,ZHOU Kedong.Research onelastoplastic normal impact of steel spheres against a rigid plane[J].Engineering Mechanics,2008,25(6):209.
[15]Xia Z W,Liu X D,Shan Y C,et al.Coupling simulationalgorithm of discrete element method and finite element methodfor particle damper[J].Journal of Low Frequency Noise,Vibration and Active Control,2009,28(3):197.