Transactions of Materials and Heat Treatment

Title：Research on viscous pressure forming of aluminum alloy sheet conical part at warm temperature

Authors： LIU Jian-guang WANG Zhong-jin LI Yi LIU Yan(School of Materials Science & Engineering Harbin Institute of Technology Harbin 150001 China)

Unit：

KeyWords： viscous pressure forming warm forming thermalmechanical coupled numerical simulation aluminum alloy

ClassificationCode：TG306

year,vol(issue):pagenumber：2007,32(5):33-36

Abstract：

Thermal-mechanical coupled finite element simulation was conducted for viscous pressure forming conical part made from aluminum alloy sheet at warm temperature.The temperature distributions of viscous medium and sheet metal were investigated in non-isothermal VPF.The wall-thickness distribution of sheet metal and forming load were also obtained at different forming temperatures.The bottom radius is the severely thinning area for the forming of conical part.In non-isothermal VPF,the non-uniform temperature field formed in viscous medium affects the temperature distribution of sheet metal.The center region of sheet metal has lower temperature compared to the sheet near to die corner when the viscous medium temperature is lower than that of sheet metal,which is beneficial to postponing the fracture at bottom radius.The homogenization of sheet thickness distribution is improved.Finally,viscous pressure forming of conical part at room temperature and warm temperature were conducted.FE simulation results agree well with experimental observations.

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Reference：

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