저자명 N. PARK, H. HUH, J. B. NAM, and C. G. JUNG 
Journal International Journal of Automotive Technology 
Volume 16 
Pages 73-81 
year 2015 

This paper is concerned with the anisotropy effect of DP980 sheets on the fracture model considering the variation of the loading path. For better application of a material, it is essential to understand its plastic behavior to predict the onset of the fracture in metals accurately. Especially in sheet metal forming, the anisotropy effect on the fracture strain should be taken into account to consider the fracture behavior more properly. In order to construct the fracture model, three different types of tests were carried out to obtain the facture strain from uniaxial tensile tests with classic dog-bone specimens, pure shear specimens and plane strain grooved specimens using Instron 5583. Each specimen was made along three different orientations: the angle of 0o(RD); 45o(DD); 90o(TD) with respect to the rolling direction of sheet metals to evaluate the anisotropy effect on the fracture strain. Strains were measured using the two-dimensional digital image correlation (2D-DIC) method. In order to consider the influence of anisotropy on the fracture strain accurately, the Hill’48 yield function was applied to a Lou–Huh fracture model instead of von Mises yield function. A modified Lou–Huh fracture model was represented in the space of the strain path to use the experiment result directly. The effect of the change of the loading path was also applied to the modified Lou–Huh fracture model to consider damage accumulation in the material.

번호 제목 저자명 날짜 조회 수
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124 Tension/compression hardening behaviors of auto-body steel sheets at intermediate strain rates file Geunsu Joo, Hoon Huh,...  2017.06.07 177
123 Evaluation of the effect of the strain rate on the tensile properties of carbon–epoxy composite laminates file J. Kwon, J. Choi, H. ...  2017.06.07 149
122 Material properties of the nugget zone in resistance spot-welded DP980 steel joint at various strain rates file N. Park, M. Park, J.B...  2017.06.07 178
121 Fracture-based Forming Limit Criteria for Anisotropic Materials in Sheet Metal Forming file N. Park, H. Huh, S.J....  2017.06.07 149
120 Process design of combined deep drawing and electromagnetic sharp edge forming of DP980 steel sheet file M.K. Choi, H. Huh, an...  2017.06.07 156
119 Fracture modelling of DP780 sheets using a hybrid experimental-numerical method and two-dimensional digital image correlation file Keunhwan Pack, Kwangh...  2015.12.01 1594
118 Tensile Properties of Sheet Metals at Intermediate Strain Rates with Pre-Strain file S. B. Kim and H. Huh  2015.11.18 1253
» Anisotropy Effect on the Fracture Model of DP980 Sheets Considering the Loading Path file N. PARK, H. HUH, J. B...  2015.06.15 1746
116 Evaluation of dynamic hardening models for BCC, FCC,and HCP metals at a wide range of strain rates Hoon Huh, Kwanghyun A...  2015.02.16 2236
115 Specimen and Grain Size Effects of Al1100 on Strain and Strain Rate Hardening at Various Strain Rates for Al1100 file Junbeom Kwon, Hoon Hu...  2014.08.20 2776
114 Rate-dependent hardening model for polymer-bonded explosives with an HTPB polymer matrix considering a wide range of strain rates file Chunghee Park, Hoon H...  2014.04.11 3704
113 New pseudo-elastic model for polymer-bonded explosive simulants considering the Mullins effect file Kee Sun Yeom Sehwan J...  2013.12.10 4010
112 A Phenomenological energy-based Model for PBX Simulants Considering the Mullins Effect file Kee Sun Yeom Sehwan J...  2013.12.10 3456
111 Strain Hardening Model of Pure Titanium Considering Effects of Deformation Twinning file Kwanghyun Ahn, Hoon H...  2013.09.16 3980
110 Prediction of ductile fracture for advanced high strength steel with a new criterion: Experiments and simulation file Yanshan Lou Hoon Huh  2013.04.08 5768
109 Effect of strain rate on plastic anisotropy of advanced high strength steel sheets file Jeehyang Huh Hoon Huh...  2013.04.02 3781
108 Consideration of strength differential effect in sheet metals with symmetric yield functions file Yanshan Lou Hoon Huh ...  2013.03.21 4021
107 Material Behaviors of PBX Simulant with Various Strain Rates [1] file Chunghee Park Sehwan ...  2013.01.08 5982
106 Extension of a shear-controlled ductile fracture model considering the stress triaxiality and the Lode parameter file Yanshan Lou Hoon Huh  2012.12.11 5342