Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Numerical Modeling for Cumulative Impact of Automotive Bumper

자동차 범퍼의 누적 충격 평가

  • Kim, Heon-Young (Devision of Mechanical and Mechatronics Engineering, Kangwon National University) ;
  • Choi, Jong-Gil (Devision of Mechanical and Mechatronics Engineering, Kangwon National University) ;
  • Kim, Jung-Min (Devision of Mechanical and Mechatronics Engineering, Kangwon National University) ;
  • Lee, Kang-Wook (Hyundai Mobis) ;
  • Yeo, Tae-Jung (Hyundai Mobis)
  • 김헌영 (강원대학교 기계메카트로닉스 공학부) ;
  • 최종길 (강원대학교 기계메카트로닉스 공학부) ;
  • 김정민 (강원대학교 기계메카트로닉스 공학부) ;
  • 이강욱 (현대모비스㈜) ;
  • 여태정 (현대모비스㈜)
  • Published : 2007.05.01
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Abstract

Numerical analyses are carried out to evaluate the cumulative impact damage of an automotive front end bumper under the low speed crash events(CMVSS215) by using explicit code. Results of first impact simulation, which are deformed shape, thickness, stress tensors and strain tensors, are used as the initial conditions for a next impact simulation. Between the events, the residual vibration is damped out by using nodal damping, and then recovery after each event is evaluated by several methods, one of which is a springback analysis with implicite finite element analysis code. The coupled analysis scheme for the evaluation of cumulative impact damage is verified through the comparison with test results.

Keywords

References

  1. S. J. Kang, 'Optimization of Bumper Section for Crashworthiness,' Transactions of KSAE, Vol.6, No.6, pp.276-284, 1998
  2. M. H. Kim, S. H. Kim and S. K. Ha, 'Structural Analysis and Optimal Design of front Bumper for Automobiles by Using the Beam Theory,' Transactions of the KSME, Vol.23, No.12, pp.2309-2319, 1999
  3. K.-H. Lee and W.-S. Joo, 'Optimum Design of an Automobile Front Bumper Using Orthogonal Array,' Transactions of KSAE, Vol.10, No.6, pp.125-132, 2002
  4. M. H. Kim, S. S. Cho and S. K. Ha, 'Design and Structural Analysis of Aluminum Bumper for Automobiles,' Transactions of KSAE, Vol.7, No.4, pp.217-227, 1999
  5. S. J. Lee, J. S. Park, D. H. Koo and B. H. Jung, 'The Development of Material Technology Applied to Bumper Beam,' Transactions of KSAE, Vol.10, No.4, pp.206-215, 2002
  6. J. W. Lee, K. H. Yoon, Y. S. Kang, K. T. Park and G. J. Park, 'Hood and Bumper Structure Design Methodology for Pedestrian Regulation,' Transactions of KSAE, Vol.13, No.3, pp.162-170, 2005
  7. Canadian Motor Vehicle Safety Standards 215, Transport Canada, 1991
  8. A. K. Pickett and G. Giazitzis, 'Quasi-static Nonlinear Large Deformation Analysis Using Conventional Explicit Finite Element Methods And Dynamic Relaxation Techniques,' VDI Conference, Numerical Analysis in Automotive Engineering, 1992
  9. PAM-CRASH Solver Notes Manual, ESI Group, p.432, 2004