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Design of the die shape by optimum contact ratio 1/d and its application

$ 0.00 - Tech. Paper #P04817 (Member Price)
$ 15.00 - Tech. Paper #P04817 (List Price)
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By Akikazu Nakagiri, Takaaki Yamano, Masazumi Konaka and Yuusuke Nonaka, Kansai University; Kazunari Yosida, Tokai University; and Motoo Asakawa, Waseda University, Japan
Optimum drawing die shapes with optimum contact ratio 1/do were studied by FEM simulation and experiment. Drawing stress and residual stress of the A-die (conical die) and R-die (circle die) were calculated by REM simulation and compared. A-R die combining the length of A-type die and R-type die were designed and the optimum die shapes of A-R die were investigated by comparing the drawing stress and residual stress. As a result, the length ratio of A-die part versus R-die in A-R die approach was found to be 8 to 1 in the length ratio on optimum die shape. Simultaneously, the results of the drawing stress and residual stress of FEM simulation were compared.
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