渤海某平台磁流变智能阻尼隔振控制
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摘要
目的研究了利用主动变阻尼控制系统优化方法设计磁流变智能阻尼隔振平台结构,为实际工程利用磁流变阻尼器为结构减振设计提供方法.方法采用ANSYS软件提供的结构刚度矩阵庞大,不易进行半主动和主动控制系统设计,根据ANSYS有限元分析提炼出简化计算模型,基于主动最优控制设计方法,设计了磁流变阻尼隔振系统,进行了冰激振动和地震动作用下的磁流变阻尼智能振动控制反应分析.结果该平台半主动磁流变阻尼隔振体系对导管架端帽处最大位移和甲板处最大加速度均有很好的控制效果,隔振层位移满足采油工艺要求.结论主动最优控制设计方法是一种很好的设计方法,具有广泛的应用前景;对于平台结构半主动磁流变智能阻尼隔振体系是较好的控制方案.
A design procedure for MR smart damping isolation scheme for a platform structure is presented,and a design method for practical engineering using MR damper is given.The simple computed model is derived from the analysis of the platform structure by ANSYS program.And based on the active optimal control design method,the MR smart damping isolation control system is finished.With MR smart damping isolation,the analyses of platform structures subjected to earthquakes and ice are done.The analyzed results show that the semi-active scheme utilizes lead-rubber bearings and MR dampers to effectively control not only displacements of the jacket cap and accelerations of the deck but also the drifts of damping isolation layer to satisfy the requirement of operation.As a result,the active optimal control design method is a good one with a widely used future and MR damping semi-active isolation scheme is a good vibration control one for platform structures.
A design procedure for MR smart damping isolation scheme for a platform structure is presented,and a design method for practical engineering using MR damper is given.The simple computed model is derived from the analysis of the platform structure by ANSYS program.And based on the active optimal control design method,the MR smart damping isolation control system is finished.With MR smart damping isolation,the analyses of platform structures subjected to earthquakes and ice are done.The analyzed results show that the semi-active scheme utilizes lead-rubber bearings and MR dampers to effectively control not only displacements of the jacket cap and accelerations of the deck but also the drifts of damping isolation layer to satisfy the requirement of operation.As a result,the active optimal control design method is a good one with a widely used future and MR damping semi-active isolation scheme is a good vibration control one for platform structures.
引文
[1]欧进萍,段忠东,肖仪清,等.基于实测动冰力时程的海洋平台结构冰振反应分析[J].海洋工程,1999,17(2):70-78.
[2]欧进萍,肖仪清,段忠东,等.设置粘弹性耗能器的JZ20-2MUQ平台结构冰振控制[J].海洋工程,2000,18(3):9-14.
[3]Housner G W,Bergman L A,Caughey T K,et al.Structure Control:Past,Present,and Future[J].Jour-nal of Engineering Mechanics,1997,123(9):897-971.
[4]Shirley F Y,Dyke J,Juan M,et al.ExperimentalVerification of Multiinput Seismic Control Strategiesfor Smart Dampers[J].Journal of Engineering-Mechanics,2001,127(11):1152-1164.
[5]Spencer B F,Dyke S J,Sain M K,et al.Phenomenolog-ical Model for Magnetorheological Dampers[J].J.En-gineering Mechanics,1997,123(3):230-238.
[6]Spencer B F,Johnson E A and Ramallo J C.‘Smart’Isolation for Seismic Control[J].JSME MechanicalSystems,Machine Elements and Manufacturing,2000,43(3):704-711.
[7]Yoshida O,Dyke S J,Giacosa L M,et al.Truman.Experimental Verification of Torsional Response Con-trol of Asymmetric Buildings Using MR Dampers.Earthquake Engineering and Structural Dynamics,2003(32):2085-2105.
[8]付伟庆,刘文光,魏路顺.大高宽比隔震结构模型水平向振动台试验[J].沈阳建筑大学学报:自然科学版,2005,21(4):320-324.
[9]欧进萍,杨.导管架式海洋平台结构的磁流变阻尼隔震控制[J].高技术通讯,2003(6):66-73
[10]张纪刚,吴斌,欧进萍.海洋平台冰振控制试验研究[J].东南大学学报,2005,35(1):31-34.
[11]张纪刚.海洋平台结构振动的被动与半主动混合阻尼控制[D].哈尔滨:哈尔滨工业大学土木工程学院,2005.105-131.
[12]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,2003.326-346.
[2]欧进萍,肖仪清,段忠东,等.设置粘弹性耗能器的JZ20-2MUQ平台结构冰振控制[J].海洋工程,2000,18(3):9-14.
[3]Housner G W,Bergman L A,Caughey T K,et al.Structure Control:Past,Present,and Future[J].Jour-nal of Engineering Mechanics,1997,123(9):897-971.
[4]Shirley F Y,Dyke J,Juan M,et al.ExperimentalVerification of Multiinput Seismic Control Strategiesfor Smart Dampers[J].Journal of Engineering-Mechanics,2001,127(11):1152-1164.
[5]Spencer B F,Dyke S J,Sain M K,et al.Phenomenolog-ical Model for Magnetorheological Dampers[J].J.En-gineering Mechanics,1997,123(3):230-238.
[6]Spencer B F,Johnson E A and Ramallo J C.‘Smart’Isolation for Seismic Control[J].JSME MechanicalSystems,Machine Elements and Manufacturing,2000,43(3):704-711.
[7]Yoshida O,Dyke S J,Giacosa L M,et al.Truman.Experimental Verification of Torsional Response Con-trol of Asymmetric Buildings Using MR Dampers.Earthquake Engineering and Structural Dynamics,2003(32):2085-2105.
[8]付伟庆,刘文光,魏路顺.大高宽比隔震结构模型水平向振动台试验[J].沈阳建筑大学学报:自然科学版,2005,21(4):320-324.
[9]欧进萍,杨.导管架式海洋平台结构的磁流变阻尼隔震控制[J].高技术通讯,2003(6):66-73
[10]张纪刚,吴斌,欧进萍.海洋平台冰振控制试验研究[J].东南大学学报,2005,35(1):31-34.
[11]张纪刚.海洋平台结构振动的被动与半主动混合阻尼控制[D].哈尔滨:哈尔滨工业大学土木工程学院,2005.105-131.
[12]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,2003.326-346.
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