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单出杆结构磁流变阻尼器因其阻尼力可控、结构简单等特点,成为结构半主动振动抑制应用研究的热点。由于补偿物理建模的复杂性,现有研究中一般未考虑附加刚度问题,仅有个别开展了相关试验研究。以浮动活塞-气室补偿单出杆磁流变阻尼器为研究对象,建立了阻尼器理论模型,分析了输出力的构成及影响因素,具有重要的实用价值。从示功特性角度,重点探讨了阻尼器附加刚度特性,为单出杆磁流变阻尼器设计提供重要参考。
Because of its controllable damping force and simple structure, the single-output-structure MR damper has become a hot research topic in semi-active vibration control of structures. Due to the complexity of the compensation physical modeling, the existing research generally does not consider the additional stiffness problem, and only some related experimental studies have been carried out. Taking the floating piston-air-chamber compensation single-rod MR damper as the research object, a theoretical model of the damper is established, and the composition and influencing factors of the output force are analyzed, which has important practical value. From the point of view of the dynamical characteristics, the additional stiffness characteristics of the damper are discussed emphatically, which provides an important reference for the design of single-pole MR damper.