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  • 學位論文

曲棍球桿之模型驗證與振動特性分析

Modal Verification and Vibration Characteristics Analysis of Hockey Stick

指導教授 : 林鴻裕

摘要


本文主要是針對曲棍球桿進行實驗模態分析及理論有限元素分析,以獲得曲棍球桿之振動特性。首先以有限元素法對有限元素模型進行模態分析,得到理論模態參數,包括自然頻率、模態振型,將理論與實驗之模態參數結果作模型驗證,驗證成功後,可將有限元素模型可視為一等效模型,來探討曲棍球桿的振動特性之物理意義,並分別對三種握把處不同邊界狀態,自由、固定與彈簧等邊界進行模態分析,找出彈簧與自由、固定等邊界三者之間的關係,可藉由分析模型預測實際握桿狀態。本文所建立之分析與實驗方法,有助於系統化之曲棍球桿設計變更,可達到虛擬測試之目的。

並列摘要


This text mainly focuses on the vibration characteristic of hockey stick through the method of the EMA (Experimental Model Analysis) and theoretical FEA (finite element analysis ). First, the theoretical model parameters,including natural frequency, model shape, will be observed by means of the FEA. Second, the theoretical model verification will be compared with the experimental model parameters. Finally, the certificated finite element model could be treated as an analytical model; The Hockey in three types of boundary conditions, i.e.,free-free,free-fixed and free-spring,is also analyzed to compare their modal frequencies and mode shapes. Find spring and freedom,fixing the relationship between the boundary.The modal properties of hockey in grips condition can then be predicted. The proposed analysis and experimental methodology can be beneficial to the design of hockey. The virtual testing can be enhanced in the future.

並列關鍵字

FEA EMA vibration characteristics model verification

參考文獻


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