Ti-6Al-4V 변형률 속도 변화에 따른 인장, 압축형 JC 구성방정식 변수의 변화

우상현; 이창수; 박이주; Sang-Hyun Woo; Chang-Soo Lee; Lee-Ju Park

Korean Journal of Materials Research, Vol.27, No.1, 19-24, January, 2017

DOI10.3740/MRSK.2017.27.1.19 Export Citation

Ti-6Al-4V 변형률 속도 변화에 따른 인장, 압축형 JC 구성방정식 변수의 변화

Differences on Tension, Compression JC Constitutive Equation Parameter of Strain Rate Effect for Ti-6Al-4V

우상현^{1, 2}, 이창수², 박이주^{1, 2, †}

¹과학기술연합대학원대학교 무기체계공학과
²국방과학연구소 제4기술연구본부

Sang-Hyun Woo^{1, 2}, Chang-Soo Lee², and Lee-Ju Park^{1, 2, †}

¹Weapon Systems Engineering, Korea University of Science and Technology (UST), Daejeon 34113, Republic of Korea
²The 4th Research and Development Institute, Agency for Defense Development, Daejeon 34186, Republic of Korea

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This paper is concerned with a test method that can be used to investigate the parameters of the Johnson-Cook constitutive model. These parameters are essential for accurately analyzing material behavior under impact loading conditions in numerical simulation. Ti-6Al-4V alloy (HCP crytal structure) was used as a specimen for the experiments. In the 10.3-103/s strain rate range, three types of experimental methods (convention, compression and tension) were employed to compare the differences using MTS-810, SHPB and SHTB. Finite element analysis results when applying these parameters were displayed along with the experiment results.

Keywords:srain rate;SHPB;SHTB;JC constitutive parameter

[References]

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[1] Johnson GR, Cook WH, In Proc. of the 7th Int. Symp. on Ballistics, 21, 541 (1983)

[2] Kim KH, Shin KC, Lee JJ, In Key Eng. Mater., Trans Tech Publications, 183, 1147 (2000)

[3] ASTM E9-09, ASTM Int., (2002).

[4] Woodward RL, Ph. D. Thesis, Monash Univ. (1973).

[5] Kuhn H, Medlin D, ASM Handbook, ASM Int., 8 (2000).

[6] Hopkinson B, Philos. Trans. of the Royal Soc. of London. Ser. A: Containing Pap. of a Math. or Phys. Character, p 437 (1914).

[7] Kolsky H, Proc. of the Phys. Soc. Sec. B, 676 (1949)

[8] Ogawa K, Exp. Mech., 24, 81 (1984)

[9] Gama BA, Lopatnikov SL, Gillespie JW, Appl. Mech. Rev., 57, 223 (2004)

[10] Taylor G, In Proc. of the Royal Soc. of London A:Math. Phys. and Eng. Sci., The Royal Society, 194, 1038, p 289 (1948).

[11] Meyers MA, Dynamic Behavior of Materials, John wiley & sons, (1994).