저자명 Yanshan Lou Soekbong Kim Younki Ko Hoon Huh 
Name Proc. of KSTP fall conference 
Year 2010 
page 298-305 
This paper applies ductile fracture criteria for the formability prediction of various types of steel sheets to evaluate the accuracy of ductile fracture criteria on the prediction of forming limit diagrams (FLDs). The ductile fracture criteria studied in this paper include the Cockcroft criterion (1968), the Brozzo criterion (1972), the Oh criterion (1979), the Oyane-Sato criterion (1980), the Clift criterion (1990) and the Ko-Huh criterion (2007). The material properties and the experimental FLDs of 24 kinds of steel sheets are collected from researchers. Hosford79 yield function with normal anisotropy is utilized to model the yield surfaces of these steel sheets. The Hollomon equation is employed to describe the strain hardening behaviors. The material constants in the ductile fracture criteria are evaluated with the limited strains in the uniaxial tension state for Cockcroft criterion, Brozzo criterion, Oh criterion, Clift criterion and Ko-Huh criterion while the limit strains in both the uniaxial tension and plane strain tension conditions are used for the material constant evaluation in Oyane-Sato criterion. The FLDs are predicted with these ductile fracture criteria with linear strain paths. The predicted FLDs are compared with experimental data. The results show that the FLDs predicted from Oyane-Sato and Ko-Huh ductile fracture criteria match the experimental data well for the LHS FLDs while other ductile fracture criteria overestimate the limited strain in plane strain tension conditions. For the right hand side FLDs, all these ductile fracture criteria do not perform well compared with experimental FLDs.
번호 제목 저자명 날짜 조회 수
256 Dynamic Hardening Equation for Metallic Materials with the Variation of Crystalline Structures file Kwanghyun Ahn Hoon Hu...  2012.06.07 8921
255 Effect of the Measurement Uncertaintty of Dynamic Tensile Properties on Dynamic Buckling Analysis of a Circular Tube file Sehwan Jeong Hoon Huh  2012.08.06 8366
254 Evolution of yield surface of SPCC steel sheet at different strain rates file Jeehyang Huh Hoon Huh  2012.05.29 7906
253 Investigation of springback behavior of DP780 steel sheets [1] file M.K.Choi H.Huh  2012.06.08 7483
252 Evaluation of Ductile Fracture Criteria in Full Stress States file Yanshan Lou, Mingjun...  2013.02.01 6759
251 A New Tangent Stiffness for Anisotropic Elasto-Viscoplastic Analysis of Polycrystalline Deformations file J. H. Yoon H. Huh Y. ...  2006.12.11 6501
250 User Defined Material Model in LS-DYNA for Numerical Simulations of PBX Simulants file Chunghee Park Hoon Hu...  2013.08.30 6346
249 Effect of Tensile Speed on the Failure Load of Laser Welding under Combined Loading Conditions [2] file Jiwoong Ha Hoon Huh S...  2012.06.27 6332
248 Prediction of fracture in a hub-hole expansion with a defected-edge model file J. S. Lee H. Huh  2005.11.29 6139
247 Dynamic Material Properties of an Armor Plate Material for an Armored Vehicle file Jiwoong Ha Kwanghyun ...  2012.06.27 6135
246 Characteristics Analysis of the High Performance Damper-Strut Module file Youn-Ki Ko Jung-Han S...  2006.06.14 6113
245 Effect of Deformation Twinning on Strain Hardening in Titanium file Kwanghyun Ahn Hoon Hu...  2012.06.04 5819
» Application of Ductile Fracture Criteria for the FLD Prediction of Steel Sheets file Yanshan Lou Soekbong ...  2010.12.27 5761
243 Development of Braking System for Railway Vehicle Using Progressive Compression Process file Kwanghyun Ahn Youn Ki...  2011.12.15 5701
242 Forming Limit Diagram of Advanced High Strength Steel Sheets for High-Speed Sheet Metal Forming file S. J. Lim, S. B. Kim...  2012.05.29 5681
241 Quasi-Static Failure of Spot Welds of AHSS under Combined Loading Conditions file Jiwoong Ha Hoon Huh H...  2011.04.01 5678
240 Finite Element Stress Analysis of the Tire Contact Problem file H. Huh Y. K. Kwak Y. ...  2005.11.29 5619
239 Railway Buffer Stop Using Progressive Compression Process file Kwanghyun Ahn Youn Ki...  2010.12.24 5371
238 Anisotropy Effect on the Fracture Strain of DP980 Sheets [1] file Namsu Park, Sung Jun ...  2013.08.29 5329
237 Microscopic Investigation of the Strain Rate Hardening for Metals file J. H. Yoon H. Huh C. ...  2007.10.14 5316