한국기계가공학회지 (Journal of the Korean Society of Manufacturing Process Engineers)

  • 제21권4호
  • /
  • Pages.14-22
  • /
  • 2022
  • /
  • 1598-6721(pISSN)
  • /
  • 2288-0771(eISSN)
한국기계가공학회 (The Korean Society of Manufacturing Process Engineers)
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고강도강 마운팅브라켓의 성형성 향상 및 스프링백 예측에 관한 연구

Research on Improved Formability of High-Strength Steel Mounting Brackets and Springback Prediction

  • 임규성 (한국폴리텍대학) ;
  • 최성대 (금오공과대학교 기계시스템공학과)
  • 투고 : 2021.11.21
  • 심사 : 2022.02.28
  • 발행 : 2022.04.30
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초록

To reduce the weight of the car and ensure the safety of the driver while driving, the existing 440 MPa-class mounting bracket was treated at 590MPa to improve collision safety and secure the weight of the vehicle body. The following conclusions were drawn from the tensile test, forming analysis, and springback prediction. In the formability and springback analyses using FLD, it could be confirmed that bending was an essential process because the formability and flatness were much better when bending was added than when bending was not applied. Based on the research results, it was deduced that the mold design was necessary so that the molding was carried out at a strain rate of 20% or less for stable molding.

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과제정보

본 연구는 금오공과대학교 2021년 교내 학술 연구비 지원에 의한 것입니다.

참고문헌

  1. Park, D. H., Tak, Y. H., Kwon, H. H., An, J. Y., "Progressive die forming technology applying springback reduction of the floor mounting bracket for car seat," Proceedings of the Korean Society of Manufacturing Technology Engineers Spring Conference, pp. 14~14, 2017.
  2. Lee, D. Y., Choi, B. S., Hwang, J. H., Baek, I. K., Choi, K. Y., "Springback Control of an Automotive Surround Molding Part Using Automatic Die Compensation Module," Journal of the Korean Society For Technology of Plasticity, Vol. 18, No. 3, pp. 210-216, 2009.
  3. Ahn, D. G., Song, D. H., Han, G. H., "Spring-back analysis for the forming process of automotive inner reinforced plate using AUTOFORM," Proceedings of the Korean Society for Mechanical Engineers Spring Conference, pp. 47-50, 2008.
  4. Kang, H. J., Kim, B. H., Ahn, K. C., Kim, D. G., Yoo, C. Y., "Molding analysis of curved surface shape using autoform," Proceedings of the Korean Society of Mechanical Engineers Spring Conference, pp. 142-142, 2015.
  5. Lee, S. U., Yang, D. Y., "Die design of the sheet-metal forming for the spring back compensation," Proceedings of the Korean Society for Precision Engineering Spring Conference, pp. 110-110, 2016.
  6. Park, D. H., Tak, Y. H., Kwon, H. H., "Process Design of Automobile Seat Rail Lower Part using Ultra-High Strength DP980 Steel," Journal of the Korean Society of Manufacturing Process Engineers, Vol. 17, No. 2, pp. 160-167, 2018. https://doi.org/10.14775/ksmpe.2018.17.2.160
  7. Jung, D. G., Kim, S. H., "Prediction Accuracy in the Spring back Analysis of Press-formed Part with HSS," Proceedings of the Korean Society For Technology of Plasticity Fall Conference, pp. 270-273, 2013.
  8. Bae, G. H., "Enhancement of the Spring back Prediction Accuracy for UHSS Using the Large-deformation Flow Stress Curve," Proceedings of the Korean Society For Technology of Plasticity Fall Conference, pp. 127-130, 2015.
  9. Kim, H. Y., Kim, J. J., "Prediction of Spring Back and Formability in 3-D Stamping by An Explicit Code," Journal of the The Korean Society For Technology of Plasticity, Vol. 3, No. 1, pp. 84-96, 1994.
  10. Song, Y. J., Hahn, Y. H., Park, C. D., Chung, W. J., "Trimming Line Design of Auto-body Panel with Complex Shape Using Finete Element Inverse Method," Transactions of Materials Processing, Vol. 15, No. 6, pp. 459-466, 2006. https://doi.org/10.5228/KSPP.2006.15.6.459
  11. Jung, D. W., Lee, S. J., "The determination of initial blank shape by using the one-step FEM," Journal of Ocean Engineering and Technology, Vol. 13, No. 3, pp. 21-28, 1999.