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首页> 外文期刊>Journal of Earthquake Engineering >ADDED VISCOUS DAMPERS IN SHEAR-TYPE STRUCTURES: THE EFFECTIVENESS OF MASS PROPORTIONAL DAMPING
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ADDED VISCOUS DAMPERS IN SHEAR-TYPE STRUCTURES: THE EFFECTIVENESS OF MASS PROPORTIONAL DAMPING

机译：剪切型结构中的附加粘性阻尼器：质量比例阻尼的作用

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摘要

In this paper the authors investigate the dynamic performances of multi-degree-of-freedom shear-type structures equipped with manufactured viscous dampers. The system of added viscous dampers that leads to a mass proportional damping (MPD) matrix is identified as the one providing the best overall performance in terms of minimum top-storey response variance to a Gaussian band limited white noise input within the class of classically damped systems. A performance index developed by the authors and based upon modal damping ratios confirms that, within the class of Rayleigh damping systems, the MPD limiting case provides the largest damping effect. For a 6-d.o.f. system, a comparison with results available in literature also shows that the MPD system provides better performance than optimised (as suggested by other research works) non-classical damping schemes. A physical explanation for the optimum damping performance offered by MPD systems is also provided herein, together with clear indications about how to implement MPD systems in real building structures. A check on the applicability of MPD systems to real structures and its effectiveness is also carried out successfully through the development and study of a realistic finite element model of an actual 18-storey building.
机译：在本文中，作者研究了装配有粘性阻尼器的多自由度剪切型结构的动力性能。导致质量比例阻尼（MPD）矩阵的附加粘性阻尼器系统被认为是在经典阻尼类中对高斯频带受限的白噪声输入的最小顶层响应方差方面提供最佳总体性能的系统系统。作者根据模态阻尼比开发的性能指标证实，在瑞利阻尼系统类别中，MPD极限情况提供了最大的阻尼效果。对于6跳与文献中提供的结果进行比较，结果还表明MPD系统提供的性能要优于优化的（如其他研究工作所建议的）非经典阻尼方案。本文还提供了MPD系统提供的最佳阻尼性能的物理解释，以及有关如何在实际建筑结构中实施MPD系统的清晰指示。通过开发和研究实际的18层建筑物的有限元模型，还成功地检查了MPD系统对实际结构的适用性及其有效性。

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