本研究在探討複合材料構件於孔洞修補後之應力集中效應，並藉由有限元素分析軟體 ANSYS 建立數值模型進行模擬分析。考量複合材料於實際應用中常因損傷或孔洞而導致應力集中與結構強度下降，故本研究分別建立未修補、補片修補（patch repair）、插入式修補（plug repair）以及複合型修補的方式，並針對不同纖維方向、接觸條件（如干涉配合與膠合層）、及施力方向進行分析與比較。模擬中選用疊層複材模型，考慮多種疊層角度配置以及不同修補方式與干涉配合量，透過靜態結構分析觀察應力分佈與最大應力集中之變化。
結果顯示，適當的修補策略與纖維配置能有效降低孔洞周圍應力集中，提升整體結構承載性能，尤其當採用具干涉量之插入修補結構時，在特定條件下能顯著分散應力集中區域。本研究結果可作為複合材料結構修補設計與力學強化之參考依據，並驗證 ANSYS 作為複合材料修補模擬工具之可行性與精準度。

This study investigates the stress concentration effects in composite structures after hole repair, utilizing the finite element analysis software ANSYS to establish numerical models for simulation. Considering that composite materials often experience stress concentration and reduced structural strength due to damage or holes in practical applications, this research develops and analyzes four different conditions: unrepaired, patch repair, plug repair, and hybrid repair. The analysis further examines the influence of various fiber orientations, contact conditions (such as interference fit and adhesive layers), and loading directions.
A laminated composite model is adopted in the simulations, incorporating multiple ply orientations along with different repair strategies and levels of interference fit. Through static structural analysis, the stress distribution and changes in maximum stress concentration are observed.
The results indicate that appropriate repair strategies and fiber layups can effectively reduce stress concentration around holes and enhance the overall load-bearing performance of the structure. In particular, plug repairs with interference fit can significantly alleviate localized stress concentrations under certain conditions. The findings of this study provide a reference for the design and mechanical enhancement of composite structural repairs and validate the feasibility and accuracy of using ANSYS as a simulation tool for composite repair analysis.

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