Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Some Remarks on the Experiment and Finite Element Analysis to Evaluate to Forming Limit of Sheet Metals

금속판재의 성형성 평가를 위한 실험 및 유한요소해석에 관한 고찰

  • 곽인구 (강원대학교) ;
  • 신용승 (강원대학교) ;
  • 김형종 (강원대학교 기계·메카트로닉스 공학부) ;
  • 김헌영 (강원대학교 기계·메카트로닉스 공학부)
  • Published : 2000.08.01
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Abstract

This study aims to examine the influence of experimental and numerical factors on the results of the test and finite element simulation to evaluate the formability of sheet metals. The stretch-forming test with a hemispherical punch is carried out to obtain the limiting dome height (LDH) and forming limit diagram (FLD) for several kinds of aluminium and steel sheet. The results of the LDH and FLD tests are analysed to find any correlation with the uniaxial tensile properties. It proves that the size of the prescribed grid has great influence on the measured value of strain. The finite element analysis of the punch stretching process is also carried out and the result is compared with the experimental data. The influence of the numerical parameters such as friction coefficient, element size and anisotropy model on the simulation results tms out to be very considerable.

Keywords

References

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