【作者】 郑渊智；

【导师】 蔡婧；

【作者基本信息】 西南交通大学 ， 结构工程， 2008， 硕士

【摘要】 结构振动控制是一种新型的抗震技术,其中半主动控制是介于被动控制与主动控制之间的一种控制技术,其仅需少量外加能源,便可产生接近主动控制的效果。由智能材料磁流变体制成的磁流变阻尼器不仅具有结构简单,体积小,反应快,能耗小和阻尼力连续顺逆可调等优点外,而且还易于和计算机相结合。在半主动控制下,磁流变阻尼器可以有效地减小建筑结构的风振和地震反应。因此,国内外已经有越来越多的学者投入到此方面的研究中来,并已取得了一定的成果,但在磁流变阻尼器的力学模型和磁流变阻尼结构的分析与设计方面仍然存在着许多问题,有待于进一步解决和完善。本文以建立一套关于磁流变阻尼结构的分析方法和设计方法为目的,主要完成了以下工作:首先,磁流变阻尼器力学模型的建立,在了解和掌握用于分析磁流变阻尼器力学特性的几种力学模型的基础上,将几种模型进行了对比分析选择一种形式较为简单且能较为准确地反映阻尼器力学特性的模型;其次,磁流变阻尼器的设计和研制,介绍阻尼器内部结构特点;第三,磁流变阻尼器结构的控制算法,指出应用于控制结构的几种控制算法,包括经典的控制理论和现代先进的控制算法;第四,磁流变阻尼器结构的优化布置分析,在既定的优化目标下利用时程分析方法对磁流变阻尼结构进行优化分析,且得出了优化布置结果,并给出计算实例,编制了相应的计算程序。更多还原

【Abstract】 Structure vibration control is a new kind of anti-earthquake technique. Semi-active control is a kind of control technique which compromises between active control and passive control. It only requires small external power source and can produce control results of active control. The advantages of magnetorheologi--cal damper (MRD) which were made of magnetorheological fluid (MR) are not only simple structure, small volume, quick respond, small power requirement and adjustable damp forces, but also easily combine with computers. MRD with semi-active control strategy can effectively reduce structure’s wind vibration and earthquake response. Thus at home and abroad more and more experts study on MRD, and acquire many achievements, but there are many problems about damper mechanical model and magnetorheological structure’s analysis and design etc., so these problems require to be solved and completed.In this paper, the major aim is that establishing analysis design method about magnetorheological structure.The following work is done:First,the mechani--al model of the magnetorheological damper.Base on several mechanical models which are used to analyze the mechanical abilities of MRD a simple and accurate mechanical mode is advanced. These kinds of mechanical models which are used to analyze the mechanical abilities of MRD are compared.Second,the design and making of the MRD,Introduce the inner special on the MRD structure.Third,the control algorithm of the MRD,several control algorithm methods are rasied that are applied for the control structure,including the classic control theroy and the modern control theroy.Fouth, the optimum analysis about the magnetorheological structure. For the fixed optimum goal, the optimum design of the MRD structure is carried by using the method of time-history analysis. An example is given and corresponding calculating program is made.更多还原