Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Axial Impact Collapse Analysis on Front-End Side Members of Vehicles by FEM

FEM에 의한 차량전면부 사이드부재의 축방향 충격압궤 해석

  • Cha Cheon-Seok (Division of Mechanical and Automotive Engineering, Sunchon National University) ;
  • Chung Jin-Oh (Division of Mechanical and Automotive Engineering, Sunchon National University) ;
  • Yang In-Young (Division of Mechanical Engineering, Chosun University)
  • 차전석 (순천대학교 기계자동차공학부) ;
  • 정진오 (순천대학교 기계자동차공학부) ;
  • 양인영 (조선대학교 기계공학부)
  • Published : 2003.12.01
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Abstract

The front-end side members of vehicles(spot welded hat and double hat shaped section members) absorb most of the impact energy in a case of front-end collision. In this paper, specimens with various spot weld pitches have been tested with a high impact velocity of 7.19m/sec(impact energy of 1034J). The axial impact collapse simulation on the sections has been carried out to review the collapse characteristics of these sections, using an explicit finite element code, LS-DYNA3D. Comparing the results with experiments, the simulation has been verified; the energy absorbing capacity is analyzed and an analysis method is suggested to obtain exact collapse loads and deformation collapse modes.

Keywords

References

  1. M. D. White, N. Jones, "Experimental quasi -static axial crushing of top-hat and double-hat thin-walled sections", International Journal of Mechanical Science 41, pp. 179-208, 1999 https://doi.org/10.1016/S0020-7403(98)00047-2
  2. M. D. White, N. Jones, W. Abramowicz, 'A theoretical analysis for the quasi-static axial crushing of top-hat and double-hat thin-walled sections', International Joumal of Mechanical Sciences 41, pp. 209 -233, 1999 https://doi.org/10.1016/S0020-7403(98)00048-4
  3. 차천석, 김정호, 양인영, '모자형 단면 점용접부재의 축방향 압궤특성에 관한 연구(I)', 한국정밀공학회지, 제17권, 제3호, pp. 192~199, 2000. 3
  4. Koetsu YAMAZAKI, Jing HAN, "Maximization of crushing energy absorption of tubes", The American Institute of Aeronautics and Astronautics, pp. 2708-2717, 1998
  5. S. Santosa, T.Wierzbicki, 'Crash behavior of box columns filled with aluminum honeycomb foam', Computers & Structures, pp. 333~367, 1998
  6. 차천석, 양인영, 전형주, 김용우, 김정호, '점용접된 차체구조용 모자형 단면부재의 축방향 압궤특성', 산업안전학회지, 제15권, 제4호, pp. 20~27, 2000
  7. Mahmood, H F., and Paluzny, A., 'Design of thin walled Columns for Crash Energy ManagementTheir Strength and Model of Collapse', Proc. 4rd Instructural Conference on Vehicle Structural Mechanics, Nov. 18-20, Detroit, pp. 7-18, 1981
  8. R. H. Grzebieta and N. W. Murray, 'Energy absorption of an initially imperfect strut subjected to an impact load', International Joumal Impact Engineering, Vol.4, No.4, pp. 147-159, 1986 https://doi.org/10.1016/0734-743X(86)90002-3
  9. N. Jonse, 'Structural impact', Cambridge University press, pp. 403-405, 1989