저자명 Yanshan Lou Seokbong Kim Changsoo Lee Hoon Huh 
Name Proceedings of AEPA 2010 
Place China 
Year 2010 
This paper analytically investigates forming limit diagrams (FLDs) of advanced high
strength steel DP590 using the Marciniak-Kuczynski model (M-K model) with the strain
rate effect. Tensile tests at various strain rates were conducted to obtain the strain
hardening and strain rate hardening properties of DP590. The Johnson-Cook model was
used to interpolate the experimental data with the strain rate effect. The FLDs of DP590
were then predicted with the M-K model. The material was assumed to be rigid-plastic
and subjected to the flow rule based on the Hosford79 yield criterion. Punch stretching
tests were conducted to verify the analytical results with different punch velocities to
investigate the effect of the forming speed on formability. The analytical model without
the strain rate effect underestimated the forming limits of DP590. The computed FLDs
with the strain rate effect show good agreement with the experimental result especially
when the exponent in the Hosford79 yield criterion is 8 for static forming and 10 for
dynamic forming.
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174 A Phenomenological energy-based Model for PBX Simulants Considering the Mullins Effect file Kee Sun Yeom Sehwan J...  2013.02.06 7775
173 Dynamic Failure Characteristics of Electric Resistance Spot Welds in DP Steel Sheets [2] file Jiwoong Ha Hoon Huh J...  2012.12.10 7436
172 Variational Time Integrators for Handling Discontinuous Interfaces in Solids file S. J. Lim S. S. Cho H...  2012.03.20 6793
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170 Buffer Stopper Using Progressive Compression Process for Crash Energy Absorption of a Railway Vehicle Kwanghyun Ahn Hoon Hu...  2011.12.22 6633
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165 Quantification of Material Properties of Structural Materials for Warhead at Various Strain Rates file Kwanghyun Ahn Hoon Hu...  2012.09.26 6222
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163 Material Behaviors of PBX Simulant with Various Strain Rates [1] file Chunghee Park Sehwan ...  2013.01.08 6159
162 Effect of Strain Rate on the Material Characteristics of a Fragment-Simulating Warhead and an Armor Plate file Jiwoong Ha Hoon Huh K...  2012.06.27 6105
161 Ductile fracture of dual phase steel: mechanisms, modeling, prediction and prospective applications file Yanshan Lou, Hoon Huh  2013.02.01 6087
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158 Development and investigation of nonlinear shell elements with drilling degree of freedom file H. W. Lee H. Huh  2005.11.29 5744
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