對於大型複雜的結構系統進行分析，往往會遭遇到計算規模過大，導致分析難以求解的問題，因此已有相關的模型縮減技術被廣泛研究。本文研究重點在於如何利用構件模態綜合法(CMS)來提升對大型複雜結構分析之效率，並能保有分析之精度。除了對傳統構件模態綜合法中固定與自由介面法研究外，本文利用介面模態縮減法來改善以往介面自由度無法有效縮減的問題，並利用複合介面構件模態綜合法，可針對結構系統中構件含有不同接合之介面進行適當的假設，使其能適用在更廣義的結構分析中。本文另一個重點在於探討如何有效結合CMS與實際結構分析軟體的優點，在此藉由分析軟體ANSYS輔助模擬，可便於建立分析模型，並藉由指令呼叫其結構之質量、勁度矩陣便於後續CMS分析，改善以往對龐大模型難以模擬之問題，此外並介紹ANSYS本身含有的CMS套裝分析程式，以增加此方法對大型複雜結構進行動態分析的便利性。

Conventional finite-element analysis may encounter the problem of insufficient computational resources especially when the structure system under consideration is large and complex. In order to reduce the model order of a system, various techniques have been developed. This thesis focused on the Component Mode Synthesis (CMS), which can effectively reduce the order of a model of a large structure, maintain the original dynamic characteristic, and improve the effectiveness of analysis. This thesis studies the CMS method of fixed and free interface, and also develops improvement of relevant methods. We use the interface modes reducing method to improve the problem that fixed interface method can’t effectively reduce the DOFs on the interface. Furthermore, we also use hybrid interface CMS, which can use analysis of different interface depends on the component of structure system with different bonding interface. Another aim of thesis is to combine the advantages of CMS with commercial structure analysis software, ANSYS. By using ANSYS, it is easier for us to simulate the structural model, and to use program’s functions to call the mass and stiffness matrices of the model for CMS analysis. It can improve the problem of FEM modeling especially when the structure is huge and complex. ANSYS also have CMS program, which increases the convenience of using this method. It will provide a highly efficient analytical tool for structure analysis.

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