双层锥形杯的水力深拉
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| Published in: | 中国有色金属学报：英文版 Vol. 26; no. 1; pp. 237 - 247 |
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| Main Author: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2016
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| Subjects: | |
| Online Access: | Get full text |
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| Bibliography: | 43-1239/TG Hydrodynamic deep drawing assisted by radial pressure is an advanced sheet forming technology with great advantages such as higher drawing ratio, good surface quality and higher dimensional accuracy. In this process, both the bottom surface and the peripheral edge of sheets are under hydrodynamic pressure, so that the forming procedure is more uniform with low failure probability. Multi-layered sheets with complex geometries could be formed more easily with this technique compared with other traditional methods. Rupture is the main irrecoverable failure form in sheet forming processes. Prediction of rupture occurrence is of great importance for determining and optimizing the proper process parameters. In this research, a theoretical model was proposed to calculate the critical rupture pressure in production of double layered conical parts with hydrodynamic deep drawing process assisted by radial pressure. The effects of other process parameters on critical rupture pressure, such as punch tip radius, drawing ratio, coefficient of friction, sheet thickness and material properties were also discussed. The proposed model was compared with finite element simulation and validated by experiments on Al1050/St13 double layered sheets, where a good agreement was found with analytical results. Alireza JALIL,Mohammad HOSEINPOUR GOLLO,M.Morad SHEIKHI,S.M.Hossein SEYEDKASHI（Faculty of Mechanical Engineering, Shahid Rajaee Teacher Training University;School of Mechanical Engineering, University of Birjand） hydrodynamic deep drawing; radial pressure; double layered sheet; conical cup; critical pressure |
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| ISSN: | 1003-6326 |