Journal of Mechanical Science and Technology

  • 제16권1호
  • /
  • Pages.32-38
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  • 2002
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  • 1738-494X(pISSN)
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  • 1976-3824(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
권호 표지

Axial Impact Collapse Analysis of Spot Welded Hat and Double-hat Shaped Section Members Using an Explicit Finite Element Code

  • Cha, Cheon-Seok (Department of Mechanical Design Engineering Graduate school, Chosun University) ;
  • Kim, Young-Nam (Department of Mechanical Design Engineering Graduate school, Chosun University) ;
  • Kim, Sun-Kyu (Department of Automobile Engineering, Iksan National Collage) ;
  • Im, Kwang-Hee (Department of Automobile Engineering, Woosuk University) ;
  • Yang, In-Young (School of Mechanical Engineering, Chosun University)
  • 발행 : 2002.01.01
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초록

The purpose of this study is to analyze the collapse characteristics of widely used spot welded section members (hat and double hat section, nembers of vehicles) which possess the greatest energy absorbing capacity In an axial impact collapse. This study also suggests how the collapse load and deformation mode are obtained under impact. In the program system presented in this study, an explicit finite element code, LS-DY7A3D, is adopted for simulating complicated collapse behavior of the hat and double hat shaped section members with respect to section dimensions and spot weld pitches. Comparing the results with experiments, the simulation has been verified under a velocity of 7.19 m/sec (impact energy of 1034J)

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참고문헌

  1. Cha, C. S., Kang, J. Y. and Yang, I. Y. 2001, 'Axial Impact Collapse Analysis of Spot Welded Hat Shaped Section Members,' KSME International Journal, Vol. 15, No. 2, pp. 180-191
  2. Grzebieta, R. H. and Murray, N. W., 1986, 'Energy Absorpotion of an Initially Imperfect Strut Subjected to an Impact Load,' International Journal Impact Engineering, Vol. 4, No. 4, pp. 147-159 https://doi.org/10.1016/0734-743X(86)90002-3
  3. Jonse, N., 1989, Structural impact, Cambridge University Press, pp. 403-405
  4. Livermore Software Technology Corportation, 1993, LS-DYNA3D Theoretical Manual, pp. 6.1-6.10
  5. Livermore Software Technology Corportation, 1997, LS-DYNA User's Manual
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  7. White, M. D. and Jones, N., 1999a, 'Experimental Quasi-static Axial Crushing of Top-hat and Double-hat Thin-walled Sections,' International Journal of Mechanical Science, Vol. 41, pp. 179-208 https://doi.org/10.1016/S0020-7403(98)00047-2
  8. White, M. D., Jones, N. and Abramowicz, W., 1999b, 'A Theoretical Analysis for the Quasistatic Axial Crushing of Top-hat and Double-hat Thin-walled Sections,' International Journal of Mechanical Science, Vol. 41, pp. 209-233 https://doi.org/10.1016/S0020-7403(98)00048-4
  9. Yamaxaki Koetsu and Han Jing, 1998, 'Maximization of Crushing Energy Absorption of Tubes.' The American Institute of Aeronautics and Astronautics, pp. 2708-2717