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.
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.
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.
与油阻尼器被动控制相比，MR半主动控制可以有效地提高模态阻尼比，尤其在阻尼器位置距索端很近时仍有较好的控制效果。
However, the control efficiency of the MR semi-active control compared with that of the oil-dampers control is better, especially when the damper position is close to the end of the cable.
第一阶模态振型相对均值系统的变化很小。一般地，结构参数的随机变异对模态振型均值的影响大于对模态频率、模态阻尼比均值的影响。
In general, the variation of structure parameters has more effect on the mean values of mode than those of modal frequencies and modal damping ratios.
模态是结构的固有振动特性，每一阶模态都具有特定的固有频率、阻尼比、振型、模态刚度和模态质量。
Mode is structure's inherence characteristics, each mode has specifically resonant frequencies, damping values, mode shapes, mode stiffness and mode mass.
本文根据原型振动实测的位移记录，应用时间域识别法，求得了结构的前几阶模态的固有频率和阻尼比。
Some modal natural frequencies and damping coefficients of a structure are derived by means of in-sita testing displacement records and the time domain identification technique.
提出了多自由度（MDOF）密集模态系统阻尼比辨识的一种方法。
A method of damping identification of closely-space MDOF system is presented.
的固有频率，阻尼比，模态振型，最大位移和破坏财产的系统进行了计算和分析的基础上的振动台试验。
The natural frequency, damping ratio, mode shapes, maximum displacement and failure property of the system were calculated and analyzed based on shaking table test.
噪声对高阶模态的识别影响比低价模态大，对阻尼比的识别影响比频率大。
The influence on high order modes is larger than the low order modes, and the influence on damping ratio is larger than the frequency.
通过实测复合墙板试点工程结构的动力反应，获得了结构的自振频率、振型和阻尼比等模态参数。
The natural frequency, modal shape and modal damping ratio of the typical structural of composite wallboard (rapid wall) system are got by dynamic behavior measurement.
通过模态试验，可以计算出结构的固有频率、模态振型、阻尼比等参数，为结构设计与优化打下坚实的基础。
Eigenfrequency, vibration pattern and damping ratio can be got by modal experiment. Then, these parameters can be used to structural design and optimization.
通过模态试验，可以计算出结构的固有频率、模态振型、阻尼比等参数，为结构设计与优化打下坚实的基础。
Eigenfrequency, vibration pattern and damping ratio can be got by modal experiment. Then, these parameters can be used to structural design and optimization.
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