저자명 Yanshan Lou Hoon Huh Jeong Whan Yoon 
Journal International Journal of Mechanical Science 
Volume 66 
Number  
Pages 214-223 
year 2013 

A simple approach is proposed to extend symmetric yield functions for the consideration of strength differential (SD) effect in sheet metals. The SD effect is coupled with symmetric yield functions by simply adding a weighted pressure term for anisotropic materials based on the approaches of Spitzig et al. (Pressure dependence of yielding and associated volume expansion in tempered martensite. Acta Metall 1995; 23:885-893), Spitzig and Richmond (The effect of pressure on the flow stress of metals. Acta Metall 1984; 32:457-463) and Stoughton and Yoon (A pressure-sensitive yield criterion under non-associated flow rule for sheet metal forming, Int. J. Plast 2004; 20:705-731). This approach is applied to the symmetric Yld20002d yield function (Barlat et al. Plane stress yield function for aluminum alloy sheets - Part I: Theory, Int J Plast. 2003; 19:1297-1319). The Yld20002d yield function is then modified to describe the anisotropic and asymmetric yielding of two aluminum alloys with small SD effect: Al 2008T4 and Al 2090T3 and four hexagonclosed packed (HCP) metals with strong SD effect: pure textured magnesium, an Mg 0.5% Th Sheet, an Mg 4% Li sheet and a Ti4Al1/4O2 titanium sheet. The predicted yield surfaces are compared with experimental results for the evaluation of the modified yield function. The comparison reveals that both anisotropy and asymmetry are correctly modeled by the proposed approach.

번호 제목 저자명 날짜 조회 수
» 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 6054
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 5413
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 5331
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