저자명 Namsu Park, Chunghee Park, Hoon Huh, Jungsu Park 
Name ICT 2014 
Place Karlsruhe, Germany 
Year 2014 
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
156 An improved technique for reducing the load ringing phenomenon in tensile tests at high strain rates file J.B. Kwon, H.Huh, C.N...  2015.08.08 2592
155 Validation of Dynamic Hardening Models With Taylor Impact Tests at High Strain Rates file MingJun Piao, Chunghe...  2015.06.15 2895
154 Roof Structure Design and Evaluation for Improvement of Roof Strength of Three-Wheel Vehicles file Jesung Yoo, Junbeom K...  2015.06.15 2947
153 A Newly Developed Clamping Device for the Tension/compression Test at various Strain Rates file Geunsu JOO, Min Kuk C...  2014.12.23 3427
152 Effect of punch speed on the amount of springback in U-bending process of auto-body steel sheets Min Kuk Choi, Hoon Huh  2014.10.30 6346
151 Prediction of Fracture Strains for DP980 Steel Sheets using a Modified Lou-Huh Ductile Fracture Model file Namsu Park, Hoon Huh  2014.10.29 3668
150 High Speed Tensile Properties and Measurement Uncertainty of Auto-body Steel Sheets at Intermediate Strain Rates M.K. Choi, S. Jeong, ...  2014.10.07 3434
» Prediction of Deformation Behavior of PBX Simulant in a Warhead During High Speed Crash file Namsu Park, Chunghee ...  2014.07.01 3590
148 Optimization of Combined Deep Drawing and Electromagnetic Corner Fill Process of DP980 Steel Sheet file M. K. Choi, H. Huh, N...  2014.06.24 3751
147 Anisotropy Effect on the Stress-Based Fracture Forming Limit Diagram Using a Modified Lou–Huh Ductile Fracture Criterion file Namsu Park and Hoon Huh  2014.01.20 4747
146 Experimental Investigation on the Springback Behavior of DP780 Steel Sheets with Various Process Parameters file Min Kuk Choi, Hoon Huh  2013.12.27 4536
145 Measurement Uncertainty Evaluation for High Speed Tensile Properties of Auto-body Steel Sheets file M.K. Choi, S. Jeong, ...  2013.12.27 3843
144 Effect of Strain Rate on Mechanical Response of PBX Simulant file Chunghee Park, Hoon H...  2013.08.30 4755
143 Fracture Evaluation of Metallic Materials at Intermediate Strain Rates file S. J. Lim, K. H. Ahn,...  2013.08.30 5202
142 Anisotropy Effect on the Fracture Model of DP980 Sheets Considering the Change of Loading Path file Namsu Park, Kwanghyun...  2013.08.29 5862
141 A Phenomenological energy-based Model for PBX Simulants Considering the Mullins Effect file Kee Sun Yeom Sehwan J...  2013.02.06 8901
140 Fracture modeling of DP780 sheets using a hybrid experimental‒numerical method and two‐dimensional digital image correlation file Keunhwan Pack Kwanghy...  2013.02.06 6209
139 Ductile fracture of dual phase steel: mechanisms, modeling, prediction and prospective applications file Yanshan Lou, Hoon Huh  2013.02.01 7173
138 Material Behaviors of PBX Simulant with Various Strain Rates [1] file Chunghee Park Sehwan ...  2013.01.08 7470
137 Dynamic Hardening Equation of Nickel-based Superalloy Inconel 718 file Kwanghyun Ahn Hoon Huh  2012.12.10 5877