通过理论计算及试验模态分析，研究了磁悬浮阻尼器参数对系统弯曲模态阻尼比的影响。

Influence of the magnetic damper on bending modal damping of the system is studied by theoretical and experimental modal analysis.

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试验结果显示系统的模态阻尼比在安装磁流变阻尼器后有大幅增长，具有良好的减振效果。

The results show that modal damping ratio of cable system with MR damper is more increased, it has well effect of mitigating vibration.

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文中首先阐明了在SSI体系直接动力分析中应采用合成模态阻尼比的观点，研究了合成模态阻尼比的实测确定方法。

Firstly, the composite modal damping ratio should be adopted in dynamic analysis of SSI system, and then the method how to estimate the composite modal damping ratio of SSI system was illustrated.

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