저자명 Geunsu Joo, Hoon Huh, Min Kuk Choi 
Journal International Journal of Mechancial Sciences 
Volume 108 
Number  
Pages 174-187 
year 2016 

This paper is concerned with the effect of the strain rate on the tension/compression hardening behavior of auto-body steel sheets. Since the repeated tension and compression prevails in sheet metal forming of deep drawing, accurate material properties under tension/compression loading paths are important to predict deformed shapes of steel sheets with numerical simulation. The in-plane tension/compression tests have not yet been performed for the rate-dependent material properties which are indispensable for practical sheet metal forming simulation. An experimental technique is established to conduct tension/compression tests of DQ and DP590 steel sheets at various strain rates ranging from 0.001 s−1 to 50 s−1. A new clamping device for compression tests is designed to suppress a specimen from thickness-directional buckling with H-shaped clamping plates which are optimized for application of the DIC method. Novel devices to impose a designated tensile strain and compressive strain are also developed for tension/compression tests with the high speed material testing machine at intermediate strain rates. Tension/compression hardening curves are obtained with the variation of the strain rate. It is noted from the test results that the Bauschinger ratio is increased according to the increase of the strain rate. It represents the gradual decrease of the Bauschinger effect with the increase of the strain rate. In a transient period which occurs in loading reversal, the decrease of the tangent modulus appear slowly as the strain rate increases, so that the amount of the permanent softening becomes smaller as the strain rate becomes higher.

번호 제목 저자명 날짜 조회 수
128 Electromagneto-thermo-mechanical behaviors of conductive circular plate subject to time-dependent magnetic fields file Yuanwen Gao Bang Xu H...  2010.07.15 9633
127 Correlation of microscopic structures to the strain rate hardening of SPCC steel [1] file Hoon Huh Jong-Hun Yoo...  2010.04.29 9400
126 New ductile fracture criterion for prediction of fracture forming limit diagrams of sheet metals [1] file Yanshan Lou Hoon Huh ...  2012.12.11 8614
125 Finite Element Analysis and Design of Binder Wraps for Automobile Sheet Metal Parts using Surface Boundary Condition [1] [1] file I. S. Song D. J. Yoo ...  2005.11.29 8535
124 Material Behaviors of PBX Simulant with Various Strain Rates [1] file Chunghee Park Sehwan ...  2013.01.08 7908
123 Dynamic Hardening Equation of Nickel-based Superalloy Inconel 718 [2] file Kwanghyun Ahn Hoon Huh  2012.12.10 7806
122 NUMERICAL ANALYSIS ON MAGNETIC-ELASTO-PLASTIC BUCKLING AND BENDING OF FERROMAGNETIC RECTANGULAR PLATE file YUANWEN GAO HOON HUH  2009.08.03 7386
121 Evaluation of Dynamic Tensile Characteristics of Polypropylene Composites with Temperature Variation [1] file J.S. Kim H. Huh K.W. Lee  2009.11.30 7305
120 Dynamics Hardening Equation of the Auto-Body Steel Sheet with the Variation of Temperature file H. Huh H.J. Lee J.H. ...  2012.01.09 7208
119 Prediction of ductile fracture for advanced high strength steel with a new criterion: Experiments and simulation file Yanshan Lou Hoon Huh  2013.04.08 7192
118 Modified Membrane Finite Element Formulation considering Bending Effects in Sheet Metal Forming Analysis file H. Huh S. S. Han D. ...  2005.11.29 7116
117 Forming limit diagram of auto-body steel sheets for high-speed sheet metal forming [1] file S.B. Kim H. Huh H.H. ...  2010.12.27 7056
116 Failure characterization of spot welds under combined axial-shear loading conditions file J.H.Song H.Huh  2011.08.01 6772
115 Determination of True Stress-True Strain Curves of Polymers at Various Strain Rates Using Force Equilibrium Grid Method file Chunghee Park, Hoon H...  2012.08.16 6643
114 DESIGN OF THE CROSS SECTION SHAPE OF AN ALUMINUM CRASH BOX FOR CRASHWORTHINESS ENHANCEMENT OF A CAR file S.B. Kim H. Huh G.H. ...  2009.08.03 6604
113 Development of Buffer Stopper Using Progressive Compression Process for Crash Energy Absorption of a Railway Vehicle file Kwanghyun Ahn Hoon Hu...  2012.12.10 6563
112 Evaluation of the Material Properties of an OFHC Copper Film at High Strain Rates Using a Micro-Testing Machine file J.S. Kim H. Huh  2011.06.07 6545
111 Extension of a shear-controlled ductile fracture model considering the stress triaxiality and the Lode parameter file Yanshan Lou Hoon Huh  2012.12.11 6402
110 Sheet Metal Forming Analysis of Planar Anisotropic Materials by a Modified Membrane Finite Element Method with Bending Effect file T. H. Choi H. Huh  2005.11.29 6375
109 Three-dimensional Stable Nonconforming Parallelepiped Elements for the Stokes Problem [1] file YD. Kim H. Huh S. Lee  2005.11.29 6358