[[alternative]]Analysis in Formability of Cylindrical Micro Cup Drawing and Blank Optimization

[[abstract]]本文係探討微小圓杯引伸成形與料片最佳化之模擬分析。為了驗證有限元素方法能有效分析微小圓杯引伸成形，本文首先模擬微小圓杯引伸凸緣，並與期刊論文之實驗比較，其結果一致。其次，模擬微小圓杯引伸貫穿，分析成形負荷、厚度變化及成形杯高，藉由期刊論文之實驗比較，探討模擬分析與實驗結果之差異。此外，本文為改善金屬板材異向性所導致微小圓杯引伸貫穿之耳緣現象，採用真應變法(true strain method)預測無耳緣之最佳化料片輪廓。本文結果顯示，使用有限元素方法模擬分析微小圓杯引伸成形應屬可行，可提供微小成形相關研究之參考。[[abstract]]This study presents the analysis in formability of cylindrical micro cup drawing and blank optimization. In order to examine the analysis ability of dynamic finite element method for micro deep drawing, this paper simulates cylindrical flanged micro cup drawing and compares with the experiments of foreign journals at first. It shows the results are the same. Secondly, this paper simulates cylindrical micro cup deep drawing through the die. Compared with these results such as forming load, thickness variation and cup high, the difference between simulation and experiments are shown. Besides, this paper uses true strain method to predict the optimum blank shape to improve the earing due to the anisotropic blank in cylindrical micro cup deep drawing through the die. From this investigation, it shows that dynamic finite element method is a useful simulation tool to analyze cylindrical micro cup drawing. This paper could be the reference for related research.[[sponsorship]]中華民國力學學會[[conferencetype]]國內[[conferencedate]]20051216~20051217[[conferencelocation]]新竹, 臺