本文發展一套「流線法」（Stream line method）理論，係將材料異向性視為勢能源項並疊加入勢能流場之概念。利用此理論可有效的用來預測不規則稜柱杯引伸時最佳化料片之外形。由「流線法」計算方杯引伸時，所得最佳化料片輪廓，顯示材料異向性在預測最佳化料片外形上有其重要的影響。為驗證理論之正確性，本文亦設計一組方杯引伸模具，於板金成形機上實驗。最佳化料片在引伸製程中，方杯端緣顯示出均勻的平整性，以及引伸杯高度的量測均顯示理論與實驗的結果均相當吻合。 This paper present a theory superimposing material anisotropic property as a "sink" to the potential field concept. An efficient and easily complemented Stream Line Method was then developed to predict the optimum blank of the irregular prismatic cup drawing. From the optimum blank contours calculated by the Stream Line Method for the square cup, it shows that material anisotropy has significant influence in the prediction of the optimum blank shape. As a verification of the theory, an experiment of square cup drawing was conducted. It shows flat-cup head for the optimum blank in the experimental drawing process. The measured cup heights also show good agreement between theoretical and experimental results.
關聯:
中華民國力學學會第廿三屆全國力學會議論文集三=Proceedings of the 23nd National Conference on Theoretical and Applied Mechanics，頁71-76
