Skip to main content
placeholder image

Large ellipsoid parts manufacture using electromagnetic incremental forming with variable blankholder structure

Journal Article


Abstract


  • Large ellipsoid parts are prone to wrinkle when forming by using traditional stamping. Aiming to solve the wrinkling problem in large parts, the EMIF method with a variable blank holder is proposed in this paper. The numerical simulation has shown that the sheet material near the blank holder is, as a consequence of stamping, subjected to circumferential compressive stress. When the drawing height was 100 mm, the sheet metal was notably wrinkled. In the electromagnetic forming (EMF) process, the sheet region facing the coil becomes thinner. However, the sheet metal thickness corresponding to the coil edge increases with the increase in forming height. If the EMF forming height is 150 mm, the sheet, which is in contact with the smooth mold, is deformed without a wrinkle. Compared to traditional stamping, the EMF can significantly reduce the sheet metal wrinkling, improving the deformation height of the sheet metal smooth area.

Publication Date


  • 2021

Citation


  • Cui, X., Yan, Z., Chen, B., Du, Z., Xiao, A., & Yu, H. (2021). Large ellipsoid parts manufacture using electromagnetic incremental forming with variable blankholder structure. International Journal of Advanced Manufacturing Technology, 116(11-12), 3699-3715. doi:10.1007/s00170-021-07695-y

Scopus Eid


  • 2-s2.0-85110941626

Start Page


  • 3699

End Page


  • 3715

Volume


  • 116

Issue


  • 11-12

Abstract


  • Large ellipsoid parts are prone to wrinkle when forming by using traditional stamping. Aiming to solve the wrinkling problem in large parts, the EMIF method with a variable blank holder is proposed in this paper. The numerical simulation has shown that the sheet material near the blank holder is, as a consequence of stamping, subjected to circumferential compressive stress. When the drawing height was 100 mm, the sheet metal was notably wrinkled. In the electromagnetic forming (EMF) process, the sheet region facing the coil becomes thinner. However, the sheet metal thickness corresponding to the coil edge increases with the increase in forming height. If the EMF forming height is 150 mm, the sheet, which is in contact with the smooth mold, is deformed without a wrinkle. Compared to traditional stamping, the EMF can significantly reduce the sheet metal wrinkling, improving the deformation height of the sheet metal smooth area.

Publication Date


  • 2021

Citation


  • Cui, X., Yan, Z., Chen, B., Du, Z., Xiao, A., & Yu, H. (2021). Large ellipsoid parts manufacture using electromagnetic incremental forming with variable blankholder structure. International Journal of Advanced Manufacturing Technology, 116(11-12), 3699-3715. doi:10.1007/s00170-021-07695-y

Scopus Eid


  • 2-s2.0-85110941626

Start Page


  • 3699

End Page


  • 3715

Volume


  • 116

Issue


  • 11-12