- 고강도강 차체 박판부품 프레스성형 CAE의 예측 정확도 고찰
- ㆍ 저자명
- 정대근,김세호,노재동,Jung. D.G.,Kim. S.H.,Rho. J.D.
- ㆍ 간행물명
- 소성가공
- ㆍ 권/호정보
- 2014년|23권 7호|pp.446-452 (7 pages)
- ㆍ 발행정보
- 한국소성가공학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
In the current study finite element forming analysis is performed to understand the final geometric accuracy limitations for the stamping of an automotive S-rail from four different steel sheets having tensile strengths of 340MPa, 440MPa, 590MPa and 780MPa. Comparisons between the analysis and the experiments for both springback and formability as measured by the amount of edge draw-in and the thickness distribution were conducted. The springback modes were classified according to a scheme proposed in the current investigation and the error was calculated using the normalized root mean square error method. While the analysis results show fairly good agreement with the experimental data for deformation and formability, the simulation accuracy is lower for predicting wall curl, camber and section twist as the UTS of steel sheet increases.