성형효과를 고려한 해석을 통한 차체 측면구조의 충돌 및 진동 성능평가

다국어 초록 (Multilingual Abstract)

In this paper, the influence of the stamping effect is investigated in the performance analysis of a side structure. The analysis covers the performance evaluation such as the crashworthiness and NVH. Stamping analyses are carried out for the center pillar and the side sill made of high strength steels. Then, numerical simulations are carried out in order to identify the stamping effect on the crashworthiness, the natural frequency and the normal mode. The result shows that the analysis of the side structure considering the forming history leads to a different result from that without considering the forming effect. The variation of the system response fully reveals effects of thinning and hardening of members on the performance prediction of vehicle parts. The analysis results demonstrate that the design of auto-body members should be carried out considering the stamping history for accurate assessment of various performances.

참고문헌 (Reference)

1 배기현, "단순 측면충돌해석에 의한 센터필러의 최적설계" 한국자동차공학회 13 (13): 84-92, 2005

2 T. Dutton, "The Effect of Forming on Automotive Crash Results"

3 S. Simunovic, "Steel Processing Effects on Impact Deformation of UltraLight Steel Auto Body"

4 X. M. Chen, "Stamping and Crash Performance of Dual Phase Steel"

5 NHTSA, "Laboratory Test Procedure for New Car Assessment Program Side Impact Testing"

6 J. O. Hallquist, "LS-DYNA Keyword User's Manual, Version 970"

7 H. Huh, "Crashworthiness Assessment of Front Side Members in an Autobody Considering the Fabrication Histories" 45 : 1645-1660, 2003

8 S. H. Kim, "Consideration of the Stamping Effect in the Crash Analysis of an Auto-body" 617-622, 2002

9 A. Kellicut, "Application of the Results of Forming Simulation in Crash Models" 509-514, 1999