When the spacecraft structural dynamic model is updated using test data, the freedom of FEM can be matched with test freedom by means of reduction method.
利用试验数据修正航天器结构动力模型时，使用缩聚方法使有限元自由度与试验自由度匹配。
A new model reduction method for dynamic analysis of complex structures based on Quasi-Rigid-Body mode and Flexibility Modification is presented.
提出一种基于柔度修正的局部刚体化结构动力模型简化方法。
It is different from base isolation system and roof isolation system in many aspects, such as, its vibration reduction mechanism, dynamic characteristics and design method, etc.
层间隔震结构在减震机理、振动特性以及设计方法等诸多方面有别于基础隔震结构和屋盖隔震结构。
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