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

The Korean Society of Mechanical Engineers (대한기계학회)
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A Numerical Study on the Dynamic Characteristics of Power Metal using Split Hopkinson Pressure Bar

홉킨스바 장치를 이용한 분말금속의 동적 특성에 관한 수치해석적 연구

  • Hwang, Du-Sun (Dept. of Mechanical Engineering, Graduate School of Chungnam National University) ;
  • Lee, Seung-U (Agency for Defense Development) ;
  • Hong, Seong-In (Dept. of Mechanical Engineering, Chungnam National University)
  • Published : 2000.12.01
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Abstract

Dynamic characteristics of powder metal is very important to mechanical structures requiring high strength or endurance for impact loading. But owing to distinctive property of powder metal, that is relative, it has been investigated restrictively compared to static characteristics. The objectives of this study is to investigate dynamic characteristics of powder metal and compare it to a fully density material. To find the characteristics, an explicit finite element method is used for simulation of Split Hopkinson Pressure Bar experiment based on the stress wave propagation theory. We obtained a dynamic stress-strain relationship and dynamic behavior of powder metal, as well as the variation of material properties during dynamic deformation.

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References

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