Expansion ratio analysis for initial die-face design of panel drawing dies |
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Authors: | W Chen J -C Yang Z -Q Lin |
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Affiliation: | 1. School of Mechanical Engineering, Jiangsu University, Jiangsu Zhenjiang 212013, People''s Republic of China;2. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200030, People''s Republic of China;1. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150090, China;2. National Key Laboratory of Precision Hot Processing of Metals, Harbin Institute of Technology, Harbin 150090, China |
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Abstract: | When the initial die-face of panel drawing dies is designed, the method of expansion ratio analysis (ERA) is usually employed to carry out formability analysis. Traditionally, ERA is performed with the help of geometry and experiential knowledge. Inevitably, design results differ from each other to the extent designers’ experiences vary. This is a rare work in which the authors research ERA by means of numerical simulations and experiments. Some useful rules are found, which can guide engineers in designing the initial die-face of panel drawing dies. ERA is less accurate than numerical simulation. As it locates upriver of panel dies development, its effect is significant. If the initial die-face is found to be acceptable after ERA, the efficiency and accuracy of numerical simulation can be improved greatly in designing the fine die-face and forming process. |
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Keywords: | Expansion ratio analysis Die-face Stretching ratio Drawing ratio Numerical simulation |
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