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A Preliminary Study on the Structural Performance of the Bumper-Beams for High-Strength Steel Applications

고장력강판 적용을 위한 자동차 범퍼빔 구조성능의 기초연구

  • Received : 2017.04.14
  • Accepted : 2017.06.09
  • Published : 2017.06.30

Abstract

Consistent efforts have been made to reduce the weight of automotive parts by using lightweight materials. This has resulted in the replacement of conventional steels in car body structures with high-strength steels, and the current usage rate has reached 50%. This study examines the structural stiffness and energy absorption capability of bumper beams made of high-strength steels. New types of bumper beam cross sections are proposed.The structural stiffness and maximum bending force were computed via finite element analysis as about 25tons and 7.5tons/mm, and there were no significant differences among the proposedcross sections. Dynamic analysis was also carried out to investigate the energy absorption capabilities of the bumper beams, and the effects of materials and thickness reduction were analyzed. High-strength steel can be used to achieve weight reduction with comparable structural performance to conventional bumper beams.

Keywords

Bending Analysis;Bumper-Beams;High-Strength Steel;Impact Analysis;Weight Reduction

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