Journal of Aerospace System Engineering (항공우주시스템공학회지)

The Society for Aerospace System Engineering (항공우주시스템공학회)
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Electromagnetic-structure Co-simulation Analysis of Aluminum Pipe with Electromagnetic Forming according to Temperature

전자기 성형 시 온도에 따른 알루미늄 파이프의 전자기-구조 연동해석

  • Kang, Hanbin (School of Mechanical and Aerospace Engineering, Gyeongsang National University, Engineering Research Institute(ERI)) ;
  • Tak, Seungmin (School of Mechanical and Aerospace Engineering, Gyeongsang National University, Engineering Research Institute(ERI)) ;
  • Baek, Inseok (School of Mechanical and Aerospace Engineering, Gyeongsang National University, Engineering Research Institute(ERI)) ;
  • Choi, Jinkyu (School of Mechanical and Aerospace Engineering, Gyeongsang National University, Engineering Research Institute(ERI)) ;
  • Lee, Seoksoon (School of Mechanical and Aerospace Engineering, Gyeongsang National University, Engineering Research Institute(ERI))
  • 강한빈 (경상대학교 대학원 기계항공공학부, Engineering Research Institute(ERI)) ;
  • 탁승민 (경상대학교 대학원 기계항공공학부, Engineering Research Institute(ERI)) ;
  • 백인석 (경상대학교 대학원 기계항공공학부, Engineering Research Institute(ERI)) ;
  • 최진규 (경상대학교 대학원 기계항공공학부, Engineering Research Institute(ERI)) ;
  • 이석순 (경상대학교 대학원 기계항공공학부, Engineering Research Institute(ERI))
  • Received : 2018.02.22
  • Accepted : 2018.05.09
  • Published : 2018.06.30
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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, the electromagnetic-structural interlocking analysis was performed in order to analyze the moldability of aluminum pipe using electromagnetic molding. The magnetic flux density was decreased due to increasing electrical resistance as the temperature increased, and the stress-strain curve decreased. The higher the temperature, the lower the flow stress, increasing deformation.

고속 전자기 성형 (EMF) 과정은 로렌츠 힘과 자기장의 에너지를 기반으로 한다. EMF의 장점은 향상된 성형성, 주름 감소 및 비접촉 성형 등이 있다. 본 연구에서는 전자기 성형을 통한 알루미늄 파이프의 온도에 따른 성형성을 분석하기 위해 전자기-구조 연동해석을 수행하였으며, 온도가 증가함에 따라 전기저항이 커지므로 인해 자속 밀도는 감소하고, 응력-변형률 곡선에서 온도가 높아질수록 유동 응력이 낮아지므로 변형량은 상대적으로 증가함을 확인할 수 있었다.

Keywords

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