저자명 N. Park and H. Huh 
Journal Transactions of Materials Processing 
Volume 25 
Number
page 91-95 
Year 2016 

This paper is concerned with modeling of a ductile fracture criterion for sheet metal considering anisotropy to predict the sudden fracture of advanced high-strength steel (AHSS) sheets during complicated forming processes. The Lou−Huh ductile fracture criterion is modified using the Hill’s 48 anisotropic plastic potential instead of the von Mises isotropic plastic potential to take account of the influence of anisotropy on the equivalent plastic strain at the onset of fracture. To determine the coefficients of the model proposed, a two-dimensional digital image correlation (2D-DIC) method is utilized to measure the strain histories on the surface of three different types of specimens during deformation. For the derivation of an anisotropic ductile fracture model, principal stresses are expressed in terms of the stress triaxiality, the Lode parameter, and the equivalent stress based on the Hill’s 48 anisotropic plastic potential. The proposed anisotropic ductile fracture criterion was quantitatively evaluated according to various directions of the maximum principal stress. Fracture forming limit diagrams were also constructed to evaluate the forming limit in sheet metal forming of AHSS sheets over a wide range of loading conditions. 

번호 제목 저자명 날짜 조회 수
85 Numerical Simulation of a Gun-launched Projectile Considering Rifled-gun Tube file G. Joo, H. Huh, Y. H....  2017.08.11 148
» Modeling of a Ductile Fracture Criterion for Sheet Metal Considering Anisotropy file N. Park and H. Huh  2017.06.07 168
83 Prediction of Fracture Strains for DP980 Steel Sheets for a Wide Range of Loading Paths file N. Park, H. Huh  2015.06.15 1141
82 Investigation of springback behavior of DP780 steel sheets after the U-bending process file M.K.Choi H.Huh  2012.11.06 4659
81 Effect of Strain Rate on Anisotropic Deformation Behavior of Advanced High Strength Steel Sheets file Jeehyang Huh Hoon Huh...  2011.12.15 6081
80 Analytical study of the effect of material properties on the formability of sheet metals based on the M-K model file Yanshan Lou Seokbong ...  2010.11.12 5596
79 Quasi-static and Dynamic Deformation Behavior of STS304- and Ta-fiber-reinforced Zr-based Amorphous Matrix Composites Fabricated by Liquid Pressing Precess file Yongjin Kim Sang Yong...  2010.07.29 8555
78 Construction of Modified Yield Loci with Respect to the Strain Rates using Hill48 Quadratic Yield Function file C. S. Lee G. H. Bae S...  2010.03.08 5170
77 Forming Limit Diagram of DP590 considering the Strain Rate [1] [1] file S. B. Kim K. H. Ahn J...  2010.02.23 5732
76 Development ofAl Crash Box for High Crashworthiness Enhancement file J. S. Yoo S. B. Kim M...  2008.12.15 5135
75 Microscopic Investigation of the Strain Rate Hardening for Polycrystalline Metals file J. H. Yoon H. Huh C. ...  2008.03.10 5675
74 Finite Element Inverse Analysis of the Deep Drawing Process Considering Bending History file Jeehyang Huh Jonghuh ...  2007.12.21 5042
73 3-D Finite Element Modeling of Fiber Reinforced Rubber Composites using a Rebar Element file S.H. Jeong J.H. Song ...  2007.01.10 6009
72 Dynamic Constitutive Equations of Auto-body Steel Sheets with the Variation of Temperature (Ⅱ) –Flow Stress Constitutive Equation– file H. J. Lee J. H. Song ...  2007.01.09 4678
71 Dynamic Constitutive Equations of Auto-body Steel Sheets with the Variation of Temperature (I)-Dynamic Material Characteristics with the Variation of Temperature file H. J. Lee J. H. Song ...  2007.01.09 4912
70 Light-weight Design with a Simplified Center-pillar Model for Improved Crashworthiness file Gihyun Bae Hoon Huh J...  2007.01.09 5068
69 Dynamic Tensile Characteristics of the High Strength Steel Sheet for an Auto-body file S. B. Kim H. Huh C. L...  2007.01.09 4380
68 Crash Analysis of the ULSAB-AVC Model with Considering Forming Effects file H. Huh J. H. Yoon Y. ...  2006.12.11 4348
67 Stress-Based Springback Reduction of an AHSS Front Side Member file J. H. Song S. H. Kim ...  2006.08.30 4531
66 Dynamic Material Property of the Sinter-Forged Cu-Cr Alloys with the Variation of Chrome Content file J.H. Song H. Huh  2006.08.02 5642