| Experimental Studies on Tension, Compression JC Constitutive Equation Parameter of Strain Rate Effect for AISI-4340 |
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Sanghyun Woo, Changsoo Lee, Leeju Park |
1Weapon Systems Engineering, Korea University of Science and Technology
2The 4th Research and Development Institute, Agency for Defense Development |
| AISI-4340 변형률 속도 변화에 따른 인장, 압축형 JC 구성방정식 변수에 관한 연구 |
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우상현, 이창수, 박이주 |
1과학기술연합대학원대학교 무기체계공학과
2국방과학연구소 제4기술연구본부 |
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| Abstract |
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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. |
| Key Words:
Strain Rate, SHPB, SHTB, JC Constitutive Parameter |
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