Journal of the Korea Institute of Military Science and Technology (한국군사과학기술학회지)

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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Experimental Studies on Tension, Compression JC Constitutive Equation Parameter of Strain Rate Effect for AISI-4340

AISI-4340 변형률 속도 변화에 따른 인장, 압축형 JC 구성방정식 변수에 관한 연구

  • Woo, Sanghyun (Weapon Systems Engineering, Korea University of Science and Technology) ;
  • Lee, Changsoo (The 4th Research and Development Institute, Agency for Defense Development) ;
  • Park, Leeju (Weapon Systems Engineering, Korea University of Science and Technology)
  • 우상현 (과학기술연합대학원대학교 무기체계공학과) ;
  • 이창수 (국방과학연구소 제4기술연구본부) ;
  • 박이주 (과학기술연합대학원대학교 무기체계공학과)
  • Received : 2016.11.02
  • Accepted : 2017.07.21
  • Published : 2017.08.05
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Abstract

In this study, the experimental methods are compared for obtaining the parameters of the Johnson-Cook constitutive model. The parameters used for numerical simulation are very important in making an accurate estimation of numerical simulation. So, the testing method of obtaining the parameters is also very important. We compared the difference of conventional method, compression method and tensile method of AISI-4340 steel at various strain rate by using MTS, SHPB and SHTB. Taylor impact test and M&S were carried out to compare differences among these three types of JC constitutive parameter.

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References

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