- 學位論文
應用有限元素法分析沖床剛性之最佳化研究
Study of Optimization of Press Rigidity by Finite Element Analysis
摘要
本研究針對門型沖床剛性之議題進行探討，分別利用有限元素法以及田口法進行研究，首先使用模擬軟體建立出完整的數值模型以及進行模擬力學分析探討，接著再以田口分析實驗法，訂出控制因子並且執行最佳化，求出控制因子之重要性。最後得到與傳統實驗設計法不同的是，由原先需做21組實驗，而本研究使用田口法只需要做16次就能達到效果，降低實驗時間24%，提高整體研究的效率。 本研究使用兩套軟體，3D繪圖軟體SolidWorks與其有限元素法分析軟體SolidWorks Simulation,來進行模型的建立與門型沖床剛性相關模擬,此模擬分析可以了解到沖床在運動過程中，其衝頭之應力、位移等等情形，進而計算剛性值。 本研究在田口參數設計時，使用四項控制因子分別是衝頭之主板厚度、肋板厚度、負載條件、固定條件，接著依照田口法的直交表L9(34)做九組實驗，判斷哪個控制因子比較重要，並求出最佳組合。 本研究內容針對門型沖床剛性設定目標值，再由模擬分析結果以及田口實驗結果進行驗證，最後求得重要性較高的兩者是主板厚度與負載條件，可以讓設計者在未來的設計時，有一個方向可以參考，並且可以根據實驗的結果更有效率的調整參數。
並列摘要
This research discusses the rigidity of press. The finite element method and the Taguchi method are used to conduct the research. Firstly, the simulation software is used to establish a complete numerical model and the simulation of mechanical analysis is discussed. Control factors and perform optimization to find the importance of control factors. This research uses two sets of software, SolidWorks 3D drawing software and SolidWorks Simulation, a finite element method analysis software, to build models and simulate rigidity of gate punches. This simulation analysis can understand the stress and displacement of the punches during the movement , and then calculate the stiffness value. In the design of Taguchi parameters, four control factors were used in this study: the thickness of the main board of the punch, the thickness of the ribs board, the load conditions, and the fixed conditions. Then, nine sets of experiments were performed according to the orthogonal table L9(34) of the Taguchi method to determine which control Factors are important, and find the best combination. The two most important factors in this study are the thickness of the motherboard and the load conditions. This allows the designer to refer to a direction in future design and adjust the parameters more efficiently based on the experimental results.
參考文獻
延伸閱讀
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