动力学分析，在ABAQUS中可以定义四种不同类型的阻尼：结构阻尼(Structure Damping)，复合模态阻尼(Composite Modal Damping)，瑞利阻尼..
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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.
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。
The modal loss factor of an orthogrid-stiffened composite panel is studied using the present method and particular attention is paid to the effect of ribs on damping.
本文将该方法应用于一种复合材料等间距正交网格加筋板的阻尼特性分析，考察了加筋对复合材料层合板阻尼特性的影响。
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。
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