空间结构磁流变阻尼器的半主动控制
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摘要
磁流变液阻尼器是一种连续可调的智能材料阻尼器,可将磁流变阻尼器与空间结构杆件组合形成智能空间结构,具有良好的振动抑制作用,对结构节点的位移和速度都有很好的控制效果。以控制下顶点竖向最大位移和无控制下顶点竖向最大位移的比值作为控制效果评价标准,研究发现随着磁流变阻尼器最大阻尼力的增大,控制效果的增加越来越不明显。
MR damper is a kind of continuous adjustable smart dampers.MR dampers were combined with spatial structure members,so smart spatial structure can be obtained with good effect for vibration control.It has fine control effectiveness to the displacement and velocity of structural nodes.The ratios of the vertical maximal displacement of the top node with control and without control were suggested to measure the control effect.It was shown that the control effect increased for the increasing of MR dampers maximal control force,but the increasing was getting more and more inconspicuous.
MR damper is a kind of continuous adjustable smart dampers.MR dampers were combined with spatial structure members,so smart spatial structure can be obtained with good effect for vibration control.It has fine control effectiveness to the displacement and velocity of structural nodes.The ratios of the vertical maximal displacement of the top node with control and without control were suggested to measure the control effect.It was shown that the control effect increased for the increasing of MR dampers maximal control force,but the increasing was getting more and more inconspicuous.
引文
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[2]孙景江.建筑结构抗震研究若干基本问题概述及讨论[J].震灾防御技术,2006,1(2):87-96.
[3]毛剑琴,卜庆中,张杰,范国滨.结构振动控制的新进展[J].控制理论与应用,2001,18(5):647-652.
[4]懂平,唐家祥.MR智能材料在结构振动控制中的应用[J].工程抗震,2000,6(2):15-23.
[5]邓志党,高峰,刘献栋,杜发荣.磁流变阻尼器力学模型的研究现状[J].振动与冲击,2006,25(3):121-126.
[6]李宏男,李忠献.结构振动与控制[M].北京:中国建筑工业出版社,2005.
[7]欧进萍.结构振动与控制[M].北京:科学出版社,2003.
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