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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/37157
標題: | FRP風機葉片構件接合強度之探討 Study on the Bonding Strength of FRP Wind Turbine Blade |
作者: | Sheng-Lun Peng 彭聖倫 |
指導教授: | 李雅榮(Ya-Jung Lee) |
關鍵字: | 風機葉片,複合材料, Wind turbine blade,FRP, |
出版年 : | 2008 |
學位: | 碩士 |
摘要: | 最近因石油的短缺,各國都在尋找能替代石油的再生能源,因此,造成風力發電蓬勃發展,風電葉片主要是由FRP(Fiber Reinforced Plastics)所製成,而台灣擁有FRP遊艇王國之美名,因此遊艇產業是非常適合投入風力發電葉片之製造。風力發電葉片乃是由兩半葉蒙皮,中間使用一至兩根腹樑(Shear Web)做為補強結構,因其剖面結構較為複雜,製程上需要將腹樑與蒙皮分開製造,其膠合處乃是容易造成應力集中和脫層破損的地方,因此如何設計腹樑與蒙皮膠合的最佳幾何形狀,乃是本文所要探討的重點。本文中依照風機葉片常見補強方式,設計三種接著方式,分別為I系列、L系列、T系列,將其放入夾具承受外力,觀察Shear Web與Spar Cap於不同接合方式下的接合強度與破壞行為,進而驗證數值模擬之結果。
數值模擬方面,使用有限元素分析軟體ABAQUS進行分析,於接著處,使用特殊元素Cohesive element進行分析,Cohesive element專門用來模擬兩物體間界面問題,可以用來瞭解當Shear Web與Spar Cap接著時,接著處破壞行為;試驗時,結構物內部破壞進展,無法藉由試驗觀察得知,只能由數值模擬進行觀察。最後本文藉由實驗數據的量測和有限元素法軟體進行計算,分析出最佳的膠合方式,提供船廠在生產葉片時,能有最好的選擇。 Because of the shortage of petroleum in the environment recently, we are looking for renewable resources to replace petroleum. The wind energy was started to pay attention. However, the main material for wind turbine blade generator is FRP (Fiber Reinforced Plastics). Therefore, the rich FRP yacht building experience make the Taiwan yacht industry suitably get involved in the process to manufacture the blades. One or two shear webs are used as a reinforced structure between the double-bladed spar caps. However, the complex section structure makes shear webs and spar caps be manufactured separately. The glue part is the weakest part and also the stress concentration part so that it is easy to delaminate. How to design the best geometry shape is what we are going to discuss. In this paper, three bonding methods (I series, L series, and T series) are designed in accordance with the common stiffener for wind turbine blade. Placed in clamping apparatus, the three series are put under external force to observe the different destruction process when shear web and spar cap are bonded with different methods. Then, based on the experiment result, we can compare with the numerical simulation manner to prove that the simulation munner is correct. The numerical simulation is analysed with ABAQUS. Analysing the bonding points with cohesive element, which is specially used for simulating the problems of the interface between two objects, can help to understand the damage process when shear web and spar cap are bonded. In conclusion, we simulate by the finite element software and then prove by the experimental results. In the future, we will except that the best solution for geometry shape can be provided to support yacht industry when manufacturing the blades. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/37157 |
全文授權: | 有償授權 |
顯示於系所單位: | 工程科學及海洋工程學系 |
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