复杂结构快速动力重分析的计算方法

Fast Dynamic Reanalysis Methods of Large structure

本文综述了目前现有的主要的快速动力重分析方法,分析了在各种不同条件下如何正确运用和合理选择重分析方法,然后本文提出了一种新的重分析思想——分步重分析,这是保证结构有较大修改时快速重分析有足够的计算精度的有效方法。

The main fast dynamic reanalysis methods available are presented andan alyzed. How to properly select and apply these methods under different situations are discussed.Then, a new reanalysis approach--multi-step reanalysis technique is proposed toassure enough accuracy of fast reanalysis while the modification of structure is not quiet small.