Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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High strain rate tensile test of sheet metals with a new tension split hopkinson bar

새로운 Tension Split Hopkinson Bar를 이용한 박판의 고속 인장시험

  • Kang, Woo-Jong (Dept. of Mechanical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Cho, Sang-Soon (Dept. of Mechanical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Huh, Hoon (Dept. of Mechanical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Jung, Dong-Taek (Agency for Defense Development)
  • 강우종 (한국과학기술원 기계공학과) ;
  • 조상순 (한국과학기술원 기계공학과) ;
  • 허훈 (한국과학기술원 기계공학과) ;
  • 정동택 (국방과학연구소)
  • Published : 1997.12.01
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Abstract

A split hopkinson bar could be used for obtaining the high strain rate material properties of sheet metals for an autobody. In high speed tensile tests of sheet matals, a new design of a tension split Hopkinson bar apparatus is needed. The design of grips and an anvil length are numerically analyzed with ABAQUS/Explicit for the new apparatus of split Hopkinson bars. From the experiments with the new apparatus, the material properties of SPCEN in the high strain rate state have been acquired and compared with quasi-static experimental results. The material properties of SPCEN as well as other sheet metals in an autobody are indispensible for the analysis of crashworthness. Nevertheless the experiment of sheet metal in the high strain rate state has not been done or reported.

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