眾多的海洋能源中，潮流能源為最適合台灣開發的海洋能源之一，如何高效率的擷取海洋中穩定的洋流帶來的能源固然重要，但是對於台灣而言，關於海潮流方面相關的結構設計皆處於開發階段，設計與建造一座安全的並且能夠承受多變的海象環境的結構更是一個重要的課題。
因此，本研究希望藉由使用有限元素分析軟體ANSYS，嘗試不同的模擬方法，試圖找出最有效率的方法來輔助潮流渦輪發電機結構的設計過程。分別使用流固耦合分析、靜態結構分析、離岸結構分析模組。考慮到海波浪為週期性的運動，計算結構中各材料的疲勞強度做為其設計標準，結構分析的von Mises應力結果不僅要低於其材料的降伏強度，更要低於其設計標準；最後，透過網格的收斂性分析，以確保分析結果的準確性。
分析的結果顯示在四支柱上的結構強度明顯不足，透過模態分析可以發現此結構缺乏對抗扭矩的設計，需要增加四支柱的直徑與厚度，以及加裝補強的結構，使整體結構的能夠更安全與穩定。未來會在組裝完成的結構上安裝感測器並設計一套監控系統，以測量實際結構的受力與變形情況。

Considerable effort is going into the development of green energy sources, including solar, hydraulic, wind, ocean, geothermal, hydrogen, and biomass energy to reduce the effects of greenhouse gas accumulation. The fact that Taiwan is an island surrounded by the open sea provides numerous opportunities for the development of energy from the oceans. Tidal currents provide the most stable form of ocean energy. Tidal impact turbines can be used to convert the kinetic energy of moving water into electrical energy.
In Taiwan, designing and constructing marine structures capable of withstanding environmental damage is more important than the efficiency of energy extration. In this paper, we developed an efficient method by which to model the strength of offshore structures using finite element analysis software (ANSYS). We configured a tidal generation unit with a pyramidal geometry. The proposed scheme begins with fluid/structure interaction analysis, followed by static structural analysis and then using the ANSYS plug-in, offshore structural analysis. We determined that it would be possible to simulate the stress in offshore structures under a wide range of environmental conditions. Calculated the design criteria for different materials for each element in the structure. Compared the analyses results and design criteria. Results revealed that von Mises stress in the columns exceeded the design criteria.

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