磁流变式调谐液柱阻尼器(MR--TLCD)是由调谐液柱阻尼器(TLCD)和磁流变液阻尼器(MRD)组成的新型半主动控制装置。建立了含有半主动控制力项的MR—TLCD力学模型以及MR—TLCD与单自由结构耦合运动方程,等效线性化处理了MR—TLCD力学方程中的非线性阻尼项。采用谱分析方法研究了MR—TLCD对单自由结构风致抖振情况下控制效果。研究结果表明,在质量比和频率比一定的情况下,MR—TLCD能够通过只改变外接电源进而改变MR—TLCD阻尼力即可实现良好的优化减振性能。且加速度控制效果优于位移控制效果。
Magnetorheological tuned liquid column damper (MR-TLCD) is a promising device for vibration control, which consists of tuned liquid column damper (TLCD) and Magnetorheological damper (MRD) as its name implies. The mechanical model of MR-TLCD with the semi-active control force and the equations of motion for the coupled system of MR-TLCD- structure were formulated in this paper and its nonlinear damping force was approximated by means of the equivalent damping linearization in solution. Wind-induced buffeting response of a single-degree-of-freedom structure with MR-TLCD was obtained by spectrum analysis method. For a fixed mass ratio and frequency ratio, the MR-TLCD was shown to be capable of achieving favorable vibration mitigation capability through adjusting damping force of MR-TLCD by external electrical current. The control performance of the acceleration was better than that of displacement.