저자명 Namsu Park, Chunghee Park, Hoon Huh, Jungsu Park 
Name 2014 KIMST Annual Conference 
Year 2014 
page  
This paper is concerned with the prediction of deformation behavior of PBX (Polymer-Bonded eXplosive) simulant during high speed crash. PBX is an energetic material in which small explosive crystals are bonded in a polymer matrix occupying typically 5−10 % by weight. PBX is used in a wide variety of weapon applications ranging from rocket propellants to the main explosive charge in conventional munitions and weapon systems. It is important to characterize the mechanical properties of PBX and to accurately model their response behavior since unexpected external stimuli could cause accidental detonation during manufacturing, transportation or handling. When PBX is applied in a warhead system that undergoes severe dynamic loading conditions during high speed crash, it is significant to investigate the deformation behavior of PBX subjected to dynamic loads in order to guarantee the safety of the warhead system before explosion. PBX in the warhead system undergoes not only localized large deformation with high strain rates induced by direct dynamic loads but also small deformation with low and intermediate strain rates due to stress wave propagation. The strain hardening behavior of PBX at quasi-static states, intermediate and high strain rates should be considered to perform the design of the warhead system since PBX undergoes deformation at a wide range of strain rates irregularly distributed in PBX from quasi-static states to high strain rates. The deformation behavior of PBX and its mechanical characteristic in the warhead were investigated using finite element analysis, which includes the effect of various strain rates.
번호 제목 저자명 날짜 조회 수
256 Evaluation of Dynamic Hardening Models With Taylor Impact Tests at Ultra High Strain Rates For 4340 Steel file M. J. Piao, I. Lee, H...  2017.10.11 93
255 Tension/compression Test of Giga-grade Steel Sheets Considering Intermediate Strain Rates file Geunsu Joo, Hoon Huh  2017.06.07 181
254 Evaluation of Measurement Uncertainty of Dynamic Tensile Properties M.K. Choi, H. Choe, H...  2017.06.07 169
253 Evaluation of Tensile Properties of Auto-body Plastics Using DIC Method and Force Equilibrium Grid Method file Jesung Yoo, Park Nams...  2017.06.07 174
252 Modeling of a Ductile Fracture Model Considering the Anisotropy of Sheet Metal file N. Park and H. Huh  2015.12.28 2059
251 Evaluation of Dynamic Hardening Models With Taylor Impact Tests at Ultra High Strain Rates For 4340 Steel file M.J. Piao, I. Lee, H....  2015.06.15 2228
250 Prediction of Fracture Strains for DP980 Steel Sheets at a Wide Range of Loading Paths file N. Park, H. Huh  2014.10.29 2381
249 Evaluation of Structural Design for Improvement of the Roof Strength of a Three-Wheel Vehicle file Jesung Yoo, Junbeom K...  2014.07.10 2709
248 Tension/compression Hardening Behavior of Auto-body Steel Sheets at Intermediate Strain Rates file Geunsu Joo, Minkuk Ch...  2014.07.10 2687
» Prediction of Deformation Behavior of PBX Simulant in a Warhead during High Speed Crash file Namsu Park, Chunghee ...  2014.07.01 2940
246 Tensile Properties of Nugget Region in Spot-welded Joints at Various Strain-Rates file Namsu Park, Moonsu Pa...  2014.07.01 2943
245 Measurement Uncertainty Evaluation of High Speed Tensile Properties of AZ 31 Sheet Considering Correlation file M. K. Choi, H. Huh, C...  2014.06.24 2654
244 Evaluation and Prediction of Tensile Properties of CFRP file Junbeom Kwon, Jaeyoun...  2013.12.27 3241
243 Experimental Investigation of the Effect of the Forming Speed on the Springback Behavior of DP780 Steel Sheets file M. K. Choi, H. Huh  2013.12.27 2727
242 Evaluation of Standard Uncertainty in Modified Measurement of Dynamic Tensile Properties of Auto-body Steel Sheets file Min Kuk Choi, Sehwan ...  2013.12.27 2958
241 The stress softening-effect of polymer-bonded explosive simulant for shear deformation file Kee Sun Yeom Hoon Huh...  2013.12.10 2840
240 User Defined Material Model in LS-DYNA for Numerical Simulations of PBX Simulants file Chunghee Park Hoon Hu...  2013.08.30 4630
239 Fracture strain evaluation of the metallic materials at intermediate strain rates file Sung Jun Lim and Hoon...  2013.08.30 3069
238 Anisotropy Effect on the Fracture Strain of DP980 Sheets [1] file Namsu Park, Sung Jun ...  2013.08.29 3123
237 Evaluation of Ductile Fracture Criteria in Full Stress States file Yanshan Lou, Mingjun...  2013.02.01 5147