半主动控制方法对海洋平台结构振动控制效果的数值模拟及试验对比研究
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摘要
采用半主动控制方法对海洋平台的振动进行控制,以一典型导管架式海洋平台为原型,根据动力相似准则按1∶50比例设计海洋平台结构模型,以磁流变阻尼器为控制装置设计半主动控制系统,进行多工况减振效果的数值模拟,在此基础上,进行波浪水池试验研究,对比分析半主动控制系统控制效果的数值模拟结果与试验结果,讨论磁流变阻尼器自身刚度、质量对平台动力响应及减振效果的影响,给出磁流变阻尼器半主动控制系统对海洋平台结构振动的减振特点。
A semi-active control strategy was adopted to control the vibration of offshore platforms.A typical jacket offshore platform was selected as experimental prototype.The experimental model of the jacket platform was designed based on the dynamical similarity criterion by the scale of 1∶50.Magnetorheological(MR)damper was adopted as the control equipment.The vibration control effects of semi-active control system with MR damper under several load cases were simulated.Model experiments were performed in wave tank in order to validate the numerical results.Numerical and experimental results were compared and analyzed.The effects of the stiffness and mass of MR damper to the dynamical response of offshore platform model and the vibration control effect were discussed.The properties of semi-active control system with MR damper for offshore platform were given.
A semi-active control strategy was adopted to control the vibration of offshore platforms.A typical jacket offshore platform was selected as experimental prototype.The experimental model of the jacket platform was designed based on the dynamical similarity criterion by the scale of 1∶50.Magnetorheological(MR)damper was adopted as the control equipment.The vibration control effects of semi-active control system with MR damper under several load cases were simulated.Model experiments were performed in wave tank in order to validate the numerical results.Numerical and experimental results were compared and analyzed.The effects of the stiffness and mass of MR damper to the dynamical response of offshore platform model and the vibration control effect were discussed.The properties of semi-active control system with MR damper for offshore platform were given.
引文
[1]孙树民,梁启智.隔震独桩平台地震反应的半主动磁流变阻尼器控制研究[J〗.振动与冲击,2001,20(3):61-64.
[2]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(I):31-34.
[3]刘剑林,魏民祥,邵金菊,等.磁流变阻尼器模糊控制的遗传算法优化[J].机械科学与技术,2008,27(2):171-175.
[4]嵇春艳,万乐坤,尹群.海洋平台磁流变阻尼器控制技术研究[J].海洋工程,2008,26(3):27-32.
[5]张纪刚,吴斌,欧进萍.渤海某平台磁流变智能阻尼隔振控制[J].沈阳建筑大学学报,2007,122(11):183-189.
[6]杨飏,欧进萍.导管架式海洋平台磁流变阻尼隔震结构的模型试验[J].振动与冲击,2006,25(5):1-5.
【7】DENG Z C,ZHANG D G.Experimental research on the vi-bration reduction and impact resistance performances of off-shore structure based on magnetorheological damper[C]//Proceedings of the ASME 27th International Conference onOffshore Mechanics and Arctic Engineering OMAE2008,Estoril,Portugal,2008.6:1-7.
【8】诸静.诸理控制理论与系统原理[M].北京:机械工业出版社,2005.
[2]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(I):31-34.
[3]刘剑林,魏民祥,邵金菊,等.磁流变阻尼器模糊控制的遗传算法优化[J].机械科学与技术,2008,27(2):171-175.
[4]嵇春艳,万乐坤,尹群.海洋平台磁流变阻尼器控制技术研究[J].海洋工程,2008,26(3):27-32.
[5]张纪刚,吴斌,欧进萍.渤海某平台磁流变智能阻尼隔振控制[J].沈阳建筑大学学报,2007,122(11):183-189.
[6]杨飏,欧进萍.导管架式海洋平台磁流变阻尼隔震结构的模型试验[J].振动与冲击,2006,25(5):1-5.
【7】DENG Z C,ZHANG D G.Experimental research on the vi-bration reduction and impact resistance performances of off-shore structure based on magnetorheological damper[C]//Proceedings of the ASME 27th International Conference onOffshore Mechanics and Arctic Engineering OMAE2008,Estoril,Portugal,2008.6:1-7.
【8】诸静.诸理控制理论与系统原理[M].北京:机械工业出版社,2005.
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