STRUCTURAL RESPONSIVENESS OF MAGNETORHEOLOGICAL FLUID DAMPERS USING SEMI-ACTIVE SUSPENSION SYSTEM

摘要

The use of structural protective systems to mitigate the effects of dynamic environmental hazards, such as earthquakes and strong wind, on civil engineering structures has been generated in recent years. These structurally protective systems usually employ supplemental damping devices to increase the energy dissipation capability of the structurally protective building. One of the most promising new devices proposed for structural protection is magneto-rheological (MR) fluid dampers. Because of its mechanical simplicity, high dynamic range, low power requirements, large force capacity, and robustness, this class of devices has been shown to mesh well with application demands and constraints to offer an attractive means of protecting civil infrastructure systems against severe earthquake and wind loading. To improve the MR damper response time, a force feedback control scheme used in conjunction with a back-driven current approach is proposed and experimentally shown to be effective. This present study is about the design and experimentation of magneto-rheological (MR) fluid damper in resisting G+6 Structures. A scaled prototype of the proposed structures and dampers is tested under seismic loading conditions by shock table test.