Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Bursting Failure Prediction in Tube Hydroforming Process

튜브 액압성형 공정에서의 터짐 현상 예측

  • 김정 (부산대학교 대학원 항공우주공학과) ;
  • ;
  • 강성종 (대구가톨릭대학교 기계자동차 공학부) ;
  • 강범수 (부산대학교 항공우주공학과)
  • Published : 2001.11.01
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Abstract

To predict busting failure in tubular hydroforming, the criteria for ductile fracture proposed by Oyane is combined with the finite element method. From the histories of stress and strain in each element obtained from finite element analysis, the fracture initiation site is predicted by mean of the criterion. The prediction by the ductile fracture criterion is applied to three hydroforming processes such as a tee extrusion, an automobile rear axle housing and lower am. For these products, the ductile fracture integral I is not only affected by the process parameters, but also by preforming processes. All the simulation results show the combination of the finite element analysis and the ductile fracture criteria is useful in the prediction of farming limit in hydroforming processes.

Keywords

References

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