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Analysis of Impact Characteristics of Bonded Dissimilar Materials for Center Pillar

센터필라 적용을 위한 이종 접합강의 충격 특성 해석에 관한 연구

  • 남기우 (부경대학교 재료공학과) ;
  • 박상현 (성우하이텍 기술연구소) ;
  • 유정수 (부경대학교 대학원 학연협동기계공학과) ;
  • 이상문 (부경대학교 대학원 학연협동기계공학과)
  • Received : 2011.10.06
  • Accepted : 2012.06.11
  • Published : 2012.08.01

Abstract

This study was carried out to analyze the dynamic characteristics of laser tailor-welded blanks (TWBs) made of dissimilar materials. The analysis was performed using Hyper Works 10.0 with Solver LS-DYNA v.971. 2D-Shell was used as the modeling element, and the number of elements and nodes was 35,641 and 36,561, respectively. The impact speed was 10 km/h. To analyze the impact characteristics according to the height of the weld line for the upper and lower parts of the center pillar, the length of the lower part was set as 300 and 400 mm. When the lower part was made of SPFC980 steel with a length of 300 mm, the deformation was the smallest and the absorbed energy of the impact force was the largest. On based the lower part of center pillar, the position of TWB shows the shorter and the better value. In other words, the performance depended on the proportion of the upper part made of high-strength SABC1470 steel. A lower part made of SPFH590 steel showed large deformation. In contrast, a lower part made of SPFC980 steel showed significantly lesser deformation. Therefore, the impact performance of a lower part made of SPFC980 steel with a length of 300 mm showed the best analysis result.

Keywords

Center Pillar;Dissimilar Material;Tailor Weld Blanks(TWB);Impact Test

References

  1. Ordinance of Ministry of Land, 2010, "Motor- Vehicle Safety Standard" No. 307.
  2. Lim, S. W., 2008, "Advanced Technology for Lightweight Automobile," The Korean Society for Heat Treatment, Vol. 21, No. 3, pp. 164-170.
  3. Kim, B. K., Kim, M. S., Kim, B. J. and Huh, S. J., 2005, "Optimal Design of the Passenger Vehicle Aluminum Seat for Weight Reduction and Durability Performance Improvement," Transactions of The Korean Society of Automotive Engineers, Vol. 13, No. 3, pp. 58-63.
  4. Bae. G. H., Huh, H., Lim, J. H. and Kim, G. S., 2010, "Development of a Design Guideline Considering the Light Weight and Crashworthiness of the ULSAB-AVC Model," 2010 Proceeding of The Korean Society of Automotive Engineers, pp. 1-8.
  5. Bae, G. H., Huh, H., Song, J. H. and Kim, S. H., 2006, "Light-Weight Design with a Simplified Center-pillar Model for Improved Crashworthiness," Transactions of The Korean Society of Automotive Engineers, Vol. 14, No. 6, pp. 112-119.
  6. Hashimura, T., Fukumoto, K. and Takahashi, N., 2010, "Structural Member of Different Materials," Patent Application number: 20100098969
  7. Michae,l S. B., 2006, "High-Strength Steel Stamping Project (ASP 050), Automotive Lightweighting Materials," FY 2006 Progress Report, pp. 1154-1158.
  8. Lee, H..W., Hwang, J. B., Kim, S. U., Kim, W. H., Yoo, S. J., Lim, H. W. and Yum, Y. J., 2010, "Construction of Vehicle Door Impact Beam Using Hot Stamping Technology," Transactions of the KSME(A), Vol. 34, No. 6, pp. 797-803. https://doi.org/10.3795/KSME-A.2010.34.6.797
  9. Lee. G. S., Kim, D. J., Han, Y. H. and Song Y. J. 2006, "Forming Analysis of TWB Inner Door Panel Considering Workshop Aspects," Transactions of Materials Processing, Vol. 15, No. 4, pp. 289-294. https://doi.org/10.5228/KSPP.2006.15.4.289
  10. Kim, J. H., Lee. W. O., Chung. K. H., Kim, D. Y. and Kim, C. M., Okamoto, K., Wagoner, R. H. and Chung, K. S. 2011, "Springback Evaluation of Friction Stir Welded TWB Automotive Sheets," Met. Mater. Int., Vol. 17, No. 1, pp. 83-98. https://doi.org/10.1007/s12540-011-0212-2

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