本文應用商業有限元素軟體DEFORM-2D，分析超音波振動輔助下料加工問題，本文首先依據Hayashi等人[15]之實驗結果，驗證有限元素軟體DEFORM-2D對於下料加工分析之適妥性，利用母模附加超音波振動來輔助下料加工，並分別探討不同振動方向、振幅及振動頻率對下料加工時沖頭負載及斷面形狀之效應。結果顯示，超音波振動對於降低沖頭負載及提升斷面品質具有良好之效應，並且，透過增加振幅及振動頻率，可增加其效應。

This paper employs DEFORM-2D software to analys the blanking problems with ultrasonic vibration. Firstly the result of experiment by Hatanaka and Yamaguchi is applied to improve the accuracy of DEFORM-2D software in blanking process. Different vibration direction, amplitude and frequency are discussed separately to know the effect of punch load and edge profile in blanking process with vibration buttom die. The result reveals that ultrasonic vibration can decrease the punch load and improve the quality of edge profile by increasing the amplitude and frequency.

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