저자명 Geunsu Joo, Hoon Huh 
Name WCCM 2016 
Place Seoul, South Korea 
Year 2016.07.24 ~ 29 

This paper is concerned with asymmetric mechanical properties of TRIP980 and TWIP980 steel sheets at various strain rates. TRIP980 and TWIP980 steel sheets have a yield asymmetry between in-plane tension and compression because of their deformation mechanics such as transformation induced plasticity and twinning based plasticity. The deformation mechanics are also influenced by the strain rate.

 In this paper, rate dependent asymmetric mechanical properties are acquired from in-plane tension and in-plane compression tests at various strain rates ranging from 0.001 s−1 to 100 s−1. In order to perform in-plane compression tests at intermediate strain rates with a High Speed Material Testing Machine (HSMTM), an improved compression device is developed to convert loading direction from tensile loading to compressive loading.

Rate dependent asymmetric mechanical properties are observed from true stresstrue strain curves at various strain rates ranging from 0.001 s−1 to 100 s−1. For the TRIP980 steel sheet, the yield strengths in-plane compression are larger than that in-plane tension at all strain rate conditions. The flow stresses become similar in-plane tension and compression after a strain of 0.06 at all strain rate conditions. For the TWIP980 steel sheet, the yield strengths in-plane compression are smaller than that in-plane tension at all strain rate conditions. The flow stresses in-plane compression are smaller than those in-plane tension at all strain rate conditions.

번호 제목 저자명 날짜 조회 수
171 Investigation of the hardening behavior of sheet metals at intermediate strain rates considering the pre-strain M. Kim and H. Huh  2017.06.07 126
170 Tensile properties of a tempered glass plate at the quasi-static state M. Kim, H. Huh, E. Ju...  2017.06.07 71
169 A Method for Evaluation of Tensile Properties of a Nugget Zone in a Spot-Welded Joint Considering the Strain Rate N. Park, M. Park, and...  2017.06.07 67
168 Prediction of the onset of fracture of DP980 steel 1.2t under typical loading conditions based on associated and non-associated flow rules file N. Park and H. Huh  2017.06.07 74
167 Evaluation of tensile properties of heat-treated AISI4340 steel at various strain rates file N. Park, S.J. Lim, an...  2017.06.07 74
166 Prediction of the Ductile-to-Brittle Transition Temperature of a silicon steel under various strain rate conditions file Junbeom Kwon, Hoon Hu...  2017.06.07 70
165 Rate-dependent Material Parameters of the Combined Isotropic/kinematic Hardening Model for the TRIP980 steel sheet file Geunsu Joo, Hoon Huh  2017.06.07 73
164 RATE-DEPENDENT HARDENING BEHAVIORS OF ULTRA-HIGH STRENGTH STEEL SHEETS UNDER IN-PLANE TENSION/COMPRESSION file Hoon Huh, Geunsu Joo  2017.06.07 75
» ASYMMETRIC MECHANICAL PROPERTIES OF TRIP980 AND TWIP980 STEEL SHEETS AT VARIOUS STRAIN RATES file Geunsu Joo, Hoon Huh  2017.06.07 74
162 AN IMPROVED DEVICE FOR THE TENSION/COMPRESSION TEST AT INTERMEDIATE STRAIN RATES file Geunsu Joo, Hoon Huh  2017.06.07 75
161 Tensile Properties of Auto-body Plastic with Various Strain Rates for FEM by Using The DIC Method and The Force Equilibrium Grid Method file Jesung Yoo, Hoon Huh,...  2017.06.07 76
160 Tensile Properties of Stitched Fabric Composite Manufactured by RTM Considering Various Strain Rates and Stacking Sequences file Jesung Yoo, Hoon Huh,...  2017.06.07 75
159 Efficient coil design by electromagnetic topology optimization for electromagnetic sharp edge forming of DP980 steel sheet file M. K. Choi, H. Huh, M...  2016.05.25 1280
158 Fracture-based forming limit criteria for anisotropic materials in sheet metal forming file Namsu Park, Hoon Huh  2016.02.17 1853
157 The tensile properties of CFRP laminate with various stacking sequences considering the strain rate effect at intermediate strain rate file Junbeom Kwon, Hoon Huh  2015.08.08 1552
156 An improved technique for reducing the load ringing phenomenon in tensile tests at high strain rates file J.B. Kwon, H.Huh, C.N...  2015.08.08 1488
155 Validation of Dynamic Hardening Models With Taylor Impact Tests at High Strain Rates file MingJun Piao, Chunghe...  2015.06.15 1727
154 Roof Structure Design and Evaluation for Improvement of Roof Strength of Three-Wheel Vehicles file Jesung Yoo, Junbeom K...  2015.06.15 1686
153 A Newly Developed Clamping Device for the Tension/compression Test at various Strain Rates file Geunsu JOO, Min Kuk C...  2014.12.23 2324
152 Effect of punch speed on the amount of springback in U-bending process of auto-body steel sheets Min Kuk Choi, Hoon Huh  2014.10.30 2853