Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Effect of Process Parameters in Electromagnetic Forming Apparatus on Forming Load by FEM

유한요소해석을 통한 전자기 성형장비 공정변수의 성형력에 미치는 영향

  • Noh, Hak Gon (Department of Aerospace Engineering, Pusan National Univ.) ;
  • Park, Hyeong Gyu (Department of Aerospace Engineering, Pusan National Univ.) ;
  • Song, Woo Jin (Industrial Liaison Innovation Center, Pusan National Univ.) ;
  • Kang, Beom Soo (Department of Aerospace Engineering, Pusan National Univ.) ;
  • Kim, Jeong (Department of Aerospace Engineering, Pusan National Univ.)
  • 노학곤 (부산대학교 항공우주공학과) ;
  • 박형규 (부산대학교 항공우주공학과) ;
  • 송우진 (부산대학교 부품소재산학협력연구소) ;
  • 강범수 (부산대학교 항공우주공학과) ;
  • 김정 (부산대학교 항공우주공학과)
  • Received : 2013.02.14
  • Accepted : 2013.05.28
  • Published : 2013.07.01
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Abstract

The high-velocity electromagnetic forming (EMF) process is based on the Lorentz force and the energy of the magnetic field. The advantages of EMF include improved formability, wrinkle reduction, and non-contact forming. In this study, numerical simulations were conducted to determine the practical parameters for the EMF process. A 2-D axis-symmetric electromagnetic model was used, based on a spiral-type forming coil. In the numerical simulation, an RLC circuit was coupled to the spiral coil to measure various design parameters, such as the system input current and the electromagnetic force. The simulation results show that even though the input peak current levels were at the same level in each case, the forming condition varied due to differences in the frequency of the input current. Thus, the electromagnetic forming force was affected by the input current frequency, which in turn, determined the magnitude of the current density and the magnetic flux density.

Keywords

References

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