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首页> 外文期刊>Arabian Journal for Science and Engineering >Parametric Study of Impulse Semi‑active Mass Damper with Developing Directional Active Joint
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Parametric Study of Impulse Semi‑active Mass Damper with Developing Directional Active Joint

机译：发展方向活动关节的脉冲半主体阻尼器的参数研究

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摘要

High-rise buildings can easily suffer structural damage from dynamic excitation, which can be reduced with a tuned mass damper (TMD). However, TMDs can experience detuning or large displacement of the mass block. To prevent detuning, a newly developed directional active joint (DAJ) installed for automatic decoupling between the control mass block and the structure is proposed. The switching timing of several weight ratios for this DAJ and the response weighted control law were investigated with the vector form instinct finite element method and the fourth-order Runge–Kutta method. A ten-story building under excitation of near fault and far-field seismic records as the original structure and under TMD and semi-active mass damper (SAMD) (VwnA1) control was investigated to compare the displacement reaction of the top floor, efficiency of shock absorption and change in the shock absorption effect when the basic vibration frequency of the structure was misestimated. With the SAMD, the structure’s maximum displacement reaction was reduced by 37–42%. Regardless of the structural frequency misestimation ratio, the maximum displacement and average root mean square absorption rate at the top floor was only 4%, and the detuning phenomenon had little effect on it. With the TMD, a higher or lower misestimation ratio of the structure frequency caused a worse shock absorption effect. The SAMD is less sensitive to the basic vibration frequency of the structure and can indeed prevent the detuning effect of the TMD.
机译：高层建筑可以轻松遭受动态励磁的结构损坏，可以用调谐质量阻尼器（TMD）减少。然而，TMD可以体验质量块的静置或大的位移。为了防止防蛀，提出了用于在控制质量块和结构之间自动去耦的新开发的方向性有源接头（DAJ）。用载体形成本能有限元方法和第四阶跑为-Kutta方法研究了该DAJ的几个重量比的切换定时和响应加权控制定律。在近端故障和远场地震记录的激励下，作为原始结构和在TMD和半主动质量阻尼器（SAMD）（VWNA1）控制下的一个十上层建筑物进行了研究，以比较顶层的位移反应，效率减震时，减震和减震效应的变化。通过SAMD，该结构的最大位移反应减少了37-42％。无论结构频率误操作率如何，顶层的最大位移和平均根部均方吸收率仅为4％，静态现象对其影响不大。随着TMD，结构频率的更高或更低的折射率导致更差的减震效果。 SAMD对结构的基本振动频率不太敏感，并且可以确实可以防止TMD的静止效果。

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