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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2024.4
- 수록면
- 103 - 111 (9page)
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초록· 키워드
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With the increasing global interest in carbon neutrality, the automotive industry is also transitioning to the production of eco-friendly cars, specifically electric vehicles. In order to achieve comparable driving distances to internal combustion engine vehicles, the application of high-capacity battery packs has led to an increase in vehicle weight. To achieve light-weighting and durability requirements of automotive components simultaneously, there is a demand for research on the application of Ultra-High Strength Steel (UHSS). However, when manufacturing chassis components using UHSS, there are challenges related to fracture defects due to lower elongation compared to regular steel sheets, as well as spring-back issues caused by high tensile strength. In this study, a simulated specimen that is not affected by the property changes of four materials was designed to improve formability of the rear cross member, which is the most challenging automotive chassis component. The influence and correlation of material-specific variables were analyzed through finite element analysis (FEA) for each material with tensile strength of 440, 590, 780, and 980 MPa grades, resulting in the development of a predictive equation. To validate the equation, the simulated specimens of 980 MPa grade were produced from the test molds. Then the reliability of the FEA and predictive equation was verified with measured specimen data using a 3D scanner. The results of this study can be proposed to improve the formability of UHSS chassis components in future researches.
목차
Abstract
1. 서론
2. 유한요소해석 및 실험계획법
3. 해석결과 분석 및 예측식 개발
4. 시편 제작 및 검증
5. 결론
REFERENCES
참고문헌 (14)
참고문헌 신청
S. S. Han, H. Y. Lee, 2022, Study on Stretch Flangeability Test Method with Straight Shear Line Specimen, Trans. Mater Process., Vol. 31, No. 1, pp. 23~28, http://doi.org/10.5228/KSTP.2022.31.1.23
D. H. Park, H. H. Kwon, 2016, Development of Automotive Seat Rail Parts for Improving Shape Fixability of Ultra High Strength Steel of 980MPa, J. Kor. Soc. Manuf. Process Eng., Vol. 15, No. 5, pp. 137~144, http://doi.org/10.14775/ksmpe.2016.15.5.137
C. M. Lee, J. H. Kim, W. J. Oh, B. H. Ryu, 2017, A Study on the Analysis for Upper Seat Track of Automobile Using 1180 MPa Ultra-High Strength Steel, J. Kor. Soc. Precis. Eng., Vol. 34, No. 8, pp. 525~531, https://doi.org/10.7736/KSPE.2017.34.8.525
D. H. Park, Y. H. Tak, H. H. Kwon, 2018, Process Design of Automobile Seat Rail Lower Parts using Ultra-High Strength, DP980 Steel, J. Kor. Soc. Manuf. Process Eng., Vol. 15, No. 5, pp. 137~144, http://doi.org/10.14775/ksmpe.2018.17.2.160
J. S. Kang, M. H. Song, J. Y. Lim, 2017, A Preliminary Study on the Structural Performance of the Bumper-Beams for High-Strength Steel Applications, J. Kor. Acad. Ind. Coop. Soc., Vol. 18, No. 6, pp. 78~84, https://doi.org/10.5762/KAIS.2017.18.6.78
D. H. Park, H. H. Kwon, 2016, Development of Automotive Seat Rail Parts for Improving Shape Fixability of Ultra High Strength Steel of 980MPa, J. Kor. Soc. Manuf. Process Eng., Vol. 15, No. 5, pp. 137~144, http://doi.org/10.14775/ksmpe.2016.15.5.137
C. M. Lee, J. H. Kim, W. J. Oh, B. H. Ryu, 2017, A Study on the Analysis for Upper Seat Track of Automobile Using 1180 MPa Ultra-High Strength Steel, J. Kor. Soc. Precis. Eng., Vol. 34, No. 8, pp. 525~531, https://doi.org/10.7736/KSPE.2017.34.8.525
D. H. Park, Y. H. Tak, H. H. Kwon, 2018, Process Design of Automobile Seat Rail Lower Parts using Ultra-High Strength, DP980 Steel, J. Kor. Soc. Manuf. Process Eng., Vol. 15, No. 5, pp. 137~144, http://doi.org/10.14775/ksmpe.2018.17.2.160
J. S. Kang, M. H. Song, J. Y. Lim, 2017, A Preliminary Study on the Structural Performance of the Bumper-Beams for High-Strength Steel Applications, J. Kor. Acad. Ind. Coop. Soc., Vol. 18, No. 6, pp. 78~84, https://doi.org/10.5762/KAIS.2017.18.6.78
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