Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Design of Bumper Backbeam Center Reinforcement Bracket for IIHS Full Overlap Bumper Test

IIHS 풀 오버랩 범퍼 시험 대응 범퍼 백빔 중앙 보강재 설계

  • Kang, Sungjong (School of Mechanical and Automotive Engineering, Catholic University of Daegu)
  • 강성종 (대구가톨릭대학교 기계자동차공학부)
  • Received : 2014.08.08
  • Accepted : 2014.09.26
  • Published : 2015.01.01
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Abstract

Since 2007, Insurance Institute of Highway Safety(IIHS) has conducted the new bumper test using bumper barrier to estimate the repair cost of impacted vehicle. In this study, for the front body FE model of a medium size passenger car analyzes were carried out to optimize the shape of backbeam center reinforcement bracket. First, overlap effect was examined with changing the overlap magnitude and spot welds were added along the backbeam center line for reducing the section shear deformation. Next, for an overlap model design parameter study was performed for the bracket. Thickness effect was examined and an inner reinforcement was added to the bracket. Also, the lower part of bracket was deleted and additionally the bracket length was extended. The results were discussed in terms of backbeam backward deflection, barrier backstop intrusion and weight. Compared with the current design, the final model showed 44.1% bracket weight reduction with 30.0% decrease of backbeam deflection.

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References

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