저자명 Yanshan Lou Hoon Huh Gihyun Bae Seokbong Kim Younki Ko 
Name ICTP'2011 
Place Aachen, Germany 
Year 2011 

This paper proposes a new ductile fracture criterion for finite element analysis (FEA) to predict limit dome height (LDH) in punch-stretch tests. The new ductile fracture criterion is suggested for the accurate prediction of a forming limit diagram (FLD) of sheet metals, which is characterized by two material constants. To implement the new criterion into FEA, a user subroutine for ABAQUS/Explicit was developed with the Yld89 yield function. Finite element (FE) models were constructed for the simulation of punch-stretch tests. Punch-stretch tests are simulated to predict the fracture initiation by the new criterion for SPCC. LDHs are measured when fracture initiates in simulations. Fracture location and LDHs are also estimated by simulation with other ductile fracture criteria such as the Cockcroft-Latham, Brozzo, Oh, Oyane-Sato, Clift and Ko-Huh criteria for comparison with experimental results. The comparison demonstrates that LDHs predicted by all criteria match with the experimental results for arc-shaped specimens while the new criterion predicts more accurate LDHs than other ductile fracture criteria for square-shaped specimens.

번호 제목 저자명 날짜 조회 수
136 Development of Buffer Stopper Using Progressive Compression Process for Crash Energy Absorption of a Railway Vehicle file Kwanghyun Ahn Hoon Hu...  2012.12.10 7285
135 Effect of Tensile Speed on the Failure Load of Laser Welding under Combined Loading Conditions file Jiwoong Ha Hoon Huh K...  2012.12.10 4864
134 Dynamic Failure Characteristics of Electric Resistance Spot Welds in DP Steel Sheets [2] file Jiwoong Ha Hoon Huh J...  2012.12.10 8455
133 Rate-dependent two-surface model for cyclic hardening behaviour of advanced high strength steel sheets file Jeehyang HUh Hoon Huh...  2012.11.06 6628
132 Quantification of Material Properties of Structural Materials for Warhead at Various Strain Rates file Kwanghyun Ahn Hoon Hu...  2012.09.26 7010
131 Evaluation of Dynamic Hardening Models for Metallic Materials at Wide Range of Strain Rates file Hoon Huh Kwanghyun Ah...  2012.09.26 7032
130 Compressive Characteristics of PBX Simulant with the Variation of the Strain Rate file Chunghee Park, Sehwan...  2012.09.21 8504
129 Pulse Shaping Techniques for Soft Materials in Split Hopkinson Pressure Bar Tests file Chunghee Park Hoon Hu...  2012.07.13 5892
128 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 6700
127 Dynamic Hardening Equations of Metallic Materials with the Variation of Crystalline Structures file K. Ahn H. Huh L. Park  2012.06.22 5219
126 Micro-Tensile Tests of Aluminum Thin Foil with the Variation of Strain Rate file J.B. Kwon J. Huh H. H...  2012.06.19 7122
125 Comparison of Dynamic Hardening Equations for Metallic Materials with the Variation of Crystalline Structures file K. Ahn H. Huh L. Park  2012.05.07 5405
124 Variational Time Integrators for Handling Discontinuous Interfaces in Solids file S. J. Lim S. S. Cho H...  2012.03.20 7694
» Limit dome height prediction based on a new ductile fracture criterion file Yanshan Lou Hoon Huh ...  2012.01.11 5524
122 Formability Prediction of Advanced High Strength Steel with a New Ductile Fracture Criterion file Yanshan Lou Sungjun L...  2012.01.11 5248
121 Buffer Stopper Using Progressive Compression Process for Crash Energy Absorption of a Railway Vehicle Kwanghyun Ahn Hoon Hu...  2011.12.22 7273
120 Failure Characteristics of Spot Welds of AHSS under Quasi-static Conditions file J. Ha H. Huh H. Lee K...  2011.12.15 5171
119 Standard Uncertainty Evaluation for Dynamic Tensile Properties of Auto-body Steel Sheets Sehwan Jeong Hoon Hu...  2011.12.13 4657
118 A Method For Treating Temporal And Spatial High Gradient Phenomena In The Dynamics Of Solids K.C. Park S.j. Lim H....  2011.08.03 4583
117 Cyclic tension/compression test of auto-bod steel sheets with the variation of the strain rate file G. H. Bae H. Huh  2011.07.04 4693