【摘要】 研究在地震激励下,磁流变环形调液阻尼器对结构扭转反应的控制.首先建立磁流变环形调液阻尼器在地震作用下的运动方程,根据随机振动虚拟激励法一般原理,推导地震作用下磁流变环形调液阻尼器振动控制最优控制参数的表达式,对结构纯扭转的振动问题进行研究,分析各参数对最优等效阻尼比和最优频率比的影响,以及各参数对磁流变环形调液阻尼器减振效果的影响.结果表明,磁流变环形调液阻尼器能有效较小结构扭转振动,是一种有效的结构扭转振动控制装置.更多还原

【Abstract】 The control performance of magnetorheological circular tuned liquid column dampers(MR-CTLCD)to torsional response of structure excited by ground motions is investigated.Based on the motion equation of the MR-CTLCD-structure system,the optimal control parameters of MR-CTLCD are given through some derivations supposing that the ground motion is a stochastic process.The influence of systematic parameters on the structural equivalent damping ratio and frequency ratio are analyzed for purely torsional vibration.The effect of systematic parameters on the structural vibration absorber factor in torsional direction is studied for torsional vibration.The results show that the MR-CTLCD can effectively decrease torsional response of structure.And the MR-CTLCD is an effective torsional response control device.更多还原