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International journal of automotive technology v.11 no.4, 2010년, pp.489 - 494   SCIE 피인용횟수: 2
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OPTIMIZING THE SHAPE OF A BUMPER BEAM SECTION CONSIDERING PEDESTRIAN PROTECTION

Park, D.K.    (Department of Automotive Engineering, Daeduk University   ); Jang, C.D.    (RIMSE, Department of Naval Architecture & Ocean Engineering, Seoul National University   ); Lee, S.B.    (Graduate School of Automotive Engineering, Kookmin University   ); Heo, S.J.    (School of Mechanical and Automotive Engineering, Kookmin University   ); Yim, H.J.    (School of Mechanical and Automotive Engineering, Kookmin University   ); Kim, M.S.    (Institute of Design Optimization Co.  );
  • 초록

    This paper presents a design technique to optimize the shape of a vehicle bumper beam that satisfies both the safety requirements for a front rigid-wall impact and the regulations protecting pedestrians from lower leg injuries caused by bumper impacts. An intermediate response surface modeling (IRSM) technique was introduced to approximate the non-linear force-displacement curves obtained from the front impact analysis of a vehicle bumper. The accuracy of the IRSM model was tested by comparing its results with those of the non-linear finite element analysis. The maximum displacement error between the two models did not exceed 3%. Using pedestrian impact analyses based on the experimental arrangement of the Plackett-Burman design, the approximate functions describing the response values acting on the lower legs were calculated. The shape of the bumper beam was optimized by integrating the IRSM with the force-displacement model and the approximate functions on lower leg impact. The optimization results satisfied safety regulations on the maximum allowable displacement of the vehicle bumper, and also the regulations protecting pedestrians from lower leg injuries caused by bumper impacts.


  • 주제어

    Bumper section .   Impact analysis .   IRSM .   Pedestrian impact .   Shape optimization.  

  • 참고문헌 (8)

    1. Insurance Institute for Highway Safety (2002). Low-Speed Crash Test Protocol. Version 5.0. 
    2. Lee, H. Y. (1995). Stiffness Analysis and Optimal Design of Thin Walled Beam Structures. M. S. Thesis. Kookmin University. Korea. 
    3. NHTSA (1976). Bumper Standard. FMVSS 49 CFR Part 581. 
    4. Paz, M., Strehl, C. P. and Schrader, P. (1976). Computer determination of the shear center of open and closed sections. Computer & Structure, 6, 117-125. 
    5. Schuler, S., Mooijman, F. and Nanda, A. (2003). Bumper systems designed for both pedestrian protection and FMVSS requirements. SAE Paper No. 2003-01-0214. 2003 SAE World Cong., Detroit, Michigan. 
    6. Vanderplaats, G. N. (1985). ADS - A FORTRAN Program for Automated Design Synthesis. Engineering Design Optimization, Inc. 
    7. Yim, H. J., Kim, M. S., Park, J., Heo, S. J. and Park, D. K. (2005). Shape optimization of bumper beam cross section for low speed crash. SAE Paper No. 2005-01- 0880. 2005 SAE World Congress, Detroit, Michigan. 
    8. Yoo, C. H. and Acra, S. V. (1996). Cross-sectional properties of thin-walled multi-cellular section. Computer & Structures 22, 1, 53?61. 
  • 이 논문을 인용한 문헌 (2)

    1. 2011. "" Journal of mechanical science and technology, 25(9): 2401~2411     
    2. Ahn, Dong-Gyu ; Kim, Se-Hun ; Park, Gun-Sung 2012. "Investigation of Development of Bumper Back-Beam Using a Thermoplastic Polyolefin" 한국정밀공학회지 = Journal of the Korean Society of Precision Engineering, 29(8): 896~905     

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