저자명 Yanshan Lou Hoon Huh 
Journal International Journal of Solids and Structures 
Volume 50 
Number
Pages 447-455 
year 2013 
This paper is concerned with the extension of a shear-controlled ductile fracture criterion for accurate
prediction of fracture forming limit diagrams (FFLD) in sheet metal forming processes. A shear-controlled
ductile fracture criterion is extended to a general three-dimensional stress space with dependence on the
stress triaxiality and the Lode parameter. The underlying mechanisms of Lode parameter dependence of
ductile fracture are first correlated to the effect of the maximum shear stress on shear-coalescence of
voids. The effect of the stress triaxiality and the Lode parameter on the equivalent plastic strain to fracture
is investigated in the space of ðg; L; eÞ. For the purpose of comparison, the Mohr–Coulomb criterion is also
transformed into the space of ðg; L; eÞ using the technique of the Mohr’s circles. Both criteria are applied to
construct fracture loci of Al 2024-T351. Fracture loci constructed are compared to experimental data
points to validate the performance of two criteria. The comparison demonstrates that fracture loci
constructed by two criteria are close to experimental results except for two data points in the high stress
triaxiality. The big difference between two criteria is that a cut-off value for the stress triaxiality is extremely
small for the Mohr–Coulomb criterion while the new ductile fracture criterion endows a constant
cut-off value of 1/3 which is reasonable for ductile materials. Due to this limitation of the Mohr–Coulomb
criterion, the new criterion is more suitable to model ductile fracture in metal forming processes.
번호 제목 저자명 날짜 조회 수
108 Consideration of strength differential effect in sheet metals with symmetric yield functions file Yanshan Lou Hoon Huh ...  2013.03.21 4081
107 Material Behaviors of PBX Simulant with Various Strain Rates [1] file Chunghee Park Sehwan ...  2013.01.08 6055
» Extension of a shear-controlled ductile fracture model considering the stress triaxiality and the Lode parameter file Yanshan Lou Hoon Huh  2012.12.11 5414
105 New ductile fracture criterion for prediction of fracture forming limit diagrams of sheet metals [1] file Yanshan Lou Hoon Huh ...  2012.12.11 6710
104 Dynamic Hardening Equation of Nickel-based Superalloy Inconel 718 [2] file Kwanghyun Ahn Hoon Huh  2012.12.10 6165
103 Development of Buffer Stopper Using Progressive Compression Process for Crash Energy Absorption of a Railway Vehicle file Kwanghyun Ahn Hoon Hu...  2012.12.10 5558
102 Effect of Tensile Speed on the Failure Load of Laser Welding under Combined Loading Conditions file Jiwoong Ha Hoon Huh K...  2012.12.10 4738
101 Comparison of the optimum designs of center pillar assembly of an auto-body between conventional steel and AHSS with a simplified side impact analysis file G. H. Bae H. Huh  2012.09.12 5400
100 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 5601
99 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 5961
98 Failure characterization of spot welds under combined axial-shear loading conditions file J.H.Song H.Huh  2011.08.01 5621
97 Intermesh effect on roller straightening process of single layer steel cord file G. Bae H. Huh J. Lee ...  2011.07.04 4672
96 A time-discontinuous implicit variational integrator for stress wave propagation analysis in solids file S.S. Cho H. Huh K.C. ...  2011.06.22 5025
95 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 5332
94 Compatible finite element modelling of laser welded region for crash analysis of autobody assemblies file J. Ha H. Huh Y.-D. An...  2011.04.01 3844
93 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 5342
92 Electromagneto-thermo-mechanical behaviors of conductive circular plate subject to time-dependent magnetic fields file Yuanwen Gao Bang Xu H...  2010.07.15 8418
91 Crushing analysis of polygonal columns and angle elements file Xiong Zhang Hoon Huh  2010.07.14 4166
90 Correlation of microscopic structures to the strain rate hardening of SPCC steel [1] file Hoon Huh Jong-Hun Yoo...  2010.04.29 6707
89 Dual metal crankshaft for heavy-duty engines by cast-joining of DCI and forged steel [1] file S. Han H. Huh G.T. Ha...  2010.02.17 5064