저자명 Hoon Huh Kwanghyun Ahn Hyung Won Kim Lee Ju Park Ji Ho Lim 
Name KISHEM 
Place Incheon, Korea 
Year 2012 
This paper evaluates existing well- known dynamic hardening models for metallic materials of typical crystalline structures. The information of the dynamic response of metallic materials is indispensable for the analysis of deformation and loading states under high strain rate conditions. Although various dynamic hardening models have been suggested by many researchers, a unique model is hardly found to represent the dynamic hardening characteristics of all types of materials. In order to evaluate existing dynamic hardening equations reported, materials for three typical crystalline structures have been selected and evaluated using the dynamic hardening characteristics of three kinds of materials: 4340Steel (BCC); OFHC (FCC); and Ti6Al4V (HCP). The dynamic hardening characteristics of each material have been obtained from uni-axial tensile tests and Split Hopkinson Pressure Bar tests. Uni-axial quasi-static and dynamic tensile tests have been performed with the variation of the strain rate from 0.001/sec to 100/sec, and SHPB tests have been conducted at higher strain rates ranging up to 4000/sec. Several existing models have been constructed and evaluated for the Johnson-Cook model, the Zerilli-Armstrong model, and the Preston-Tonks-Wallace model with the test results of the three materials. Several models suggested by the authors have also been compared for the modified Johnson-Cook model, the modified Khan-Huang model, and the Lim-Huh model. The change of the strain rate and the temperature during the deformation process was taken into account for the accurate applications of the hardening equations. The most applicable equation for each material has been recommended after thorough comparison of the constructed results.
번호 제목 저자명 날짜 조회 수
136 Development of Buffer Stopper Using Progressive Compression Process for Crash Energy Absorption of a Railway Vehicle file Kwanghyun Ahn Hoon Hu...  2012.12.10 7801
135 Effect of Tensile Speed on the Failure Load of Laser Welding under Combined Loading Conditions file Jiwoong Ha Hoon Huh K...  2012.12.10 5190
134 Dynamic Failure Characteristics of Electric Resistance Spot Welds in DP Steel Sheets [2] file Jiwoong Ha Hoon Huh J...  2012.12.10 9036
133 Rate-dependent two-surface model for cyclic hardening behaviour of advanced high strength steel sheets file Jeehyang HUh Hoon Huh...  2012.11.06 7216
132 Quantification of Material Properties of Structural Materials for Warhead at Various Strain Rates file Kwanghyun Ahn Hoon Hu...  2012.09.26 7418
» Evaluation of Dynamic Hardening Models for Metallic Materials at Wide Range of Strain Rates file Hoon Huh Kwanghyun Ah...  2012.09.26 7486
130 Compressive Characteristics of PBX Simulant with the Variation of the Strain Rate file Chunghee Park, Sehwan...  2012.09.21 8958
129 Pulse Shaping Techniques for Soft Materials in Split Hopkinson Pressure Bar Tests file Chunghee Park Hoon Hu...  2012.07.13 6379
128 Effect of Strain Rate on the Material Characteristics of a Fragment-Simulating Warhead and an Armor Plate file Jiwoong Ha Hoon Huh K...  2012.06.27 7130
127 Dynamic Hardening Equations of Metallic Materials with the Variation of Crystalline Structures file K. Ahn H. Huh L. Park  2012.06.22 5580
126 Micro-Tensile Tests of Aluminum Thin Foil with the Variation of Strain Rate file J.B. Kwon J. Huh H. H...  2012.06.19 7542
125 Comparison of Dynamic Hardening Equations for Metallic Materials with the Variation of Crystalline Structures file K. Ahn H. Huh L. Park  2012.05.07 5777
124 Variational Time Integrators for Handling Discontinuous Interfaces in Solids file S. J. Lim S. S. Cho H...  2012.03.20 8149
123 Limit dome height prediction based on a new ductile fracture criterion file Yanshan Lou Hoon Huh ...  2012.01.11 5844
122 Formability Prediction of Advanced High Strength Steel with a New Ductile Fracture Criterion file Yanshan Lou Sungjun L...  2012.01.11 5701
121 Buffer Stopper Using Progressive Compression Process for Crash Energy Absorption of a Railway Vehicle Kwanghyun Ahn Hoon Hu...  2011.12.22 7701
120 Failure Characteristics of Spot Welds of AHSS under Quasi-static Conditions file J. Ha H. Huh H. Lee K...  2011.12.15 5545
119 Standard Uncertainty Evaluation for Dynamic Tensile Properties of Auto-body Steel Sheets Sehwan Jeong Hoon Hu...  2011.12.13 4978
118 A Method For Treating Temporal And Spatial High Gradient Phenomena In The Dynamics Of Solids K.C. Park S.j. Lim H....  2011.08.03 4946
117 Cyclic tension/compression test of auto-bod steel sheets with the variation of the strain rate file G. H. Bae H. Huh  2011.07.04 5033