Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Optimization of Conditions of Forming Quality for Hot-press-formed Lower Control Arm Using Finite Element Analysis

유한요소해석을 이용한 열간프레스성형 적용 로어 컨트롤 암의 성형품질 조건 최적화

  • Son, Hyun-Sung (Metal Forming Research Group, POSCO Technical Research Laboratories) ;
  • Choi, Byung-Keun (Metal Forming Research Group, POSCO Technical Research Laboratories)
  • 손현성 (POSCO 기술연구원 가공연구그룹) ;
  • 최병근 (POSCO 기술연구원 가공연구그룹)
  • Received : 2010.01.13
  • Accepted : 2010.07.09
  • Published : 2011.01.01
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Abstract

Hot-Press-Forming (HPF), an advanced sheet metal forming method using stamping at a high temperature of about $900^{\circ}C$ and quenching in an internally cooled die set, is one of the most successful forming process in producing crash-resistant parts such as pillars and bumpers with complex shape, ultrahigh strength, and minimum springback. To optimize conditions of a forming quality in HPF process and secure a safe product without any failures, such as fractures and wrinkling, the simulations based on the coupled thermo-mechanical analysis for a hot-press-formed lower control arm are applied with Taguchi's orthogonal array experiment. Three factor variables - the friction coefficient, blank shape, and hole location for burring - are selected to be optimized. The most effective condition of a forming quality for a hot-press-formed lower control arm is suggested. The simulation results are confirmed with experimental ones.

Keywords

References

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