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 Dynamic Hardening Equation for Metallic Materials with the Variation of Crystalline Structures file Kwanghyun Ahn Hoon Hu...  2012.06.07 7947
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 6881
254 Evolution of yield surface of SPCC steel sheet at different strain rates file Jeehyang Huh Hoon Huh  2012.05.29 6861
253 Investigation of springback behavior of DP780 steel sheets [1] file M.K.Choi H.Huh  2012.06.08 6237
252 A New Tangent Stiffness for Anisotropic Elasto-Viscoplastic Analysis of Polycrystalline Deformations file J. H. Yoon H. Huh Y. ...  2006.12.11 5845
251 Evaluation of Ductile Fracture Criteria in Full Stress States file Yanshan Lou, Mingjun...  2013.02.01 5540
250 Characteristics Analysis of the High Performance Damper-Strut Module file Youn-Ki Ko Jung-Han S...  2006.06.14 5464
249 Dynamic Material Properties of an Armor Plate Material for an Armored Vehicle file Jiwoong Ha Kwanghyun ...  2012.06.27 5302
248 Prediction of fracture in a hub-hole expansion with a defected-edge model file J. S. Lee H. Huh  2005.11.29 5218
247 User Defined Material Model in LS-DYNA for Numerical Simulations of PBX Simulants file Chunghee Park Hoon Hu...  2013.08.30 4983
246 Effect of Deformation Twinning on Strain Hardening in Titanium file Kwanghyun Ahn Hoon Hu...  2012.06.04 4964
245 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 4955
244 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 4953
243 Application of Ductile Fracture Criteria for the FLD Prediction of Steel Sheets file Yanshan Lou Soekbong ...  2010.12.27 4852
242 Development of Braking System for Railway Vehicle Using Progressive Compression Process file Kwanghyun Ahn Youn Ki...  2011.12.15 4605
241 Finite Element Stress Analysis of the Tire Contact Problem file H. Huh Y. K. Kwak Y. ...  2005.11.29 4588
240 Quasi-Static Failure of Spot Welds of AHSS under Combined Loading Conditions file Jiwoong Ha Hoon Huh H...  2011.04.01 4565
239 Microscopic Investigation of the Strain Rate Hardening for Metals file J. H. Yoon H. Huh C. ...  2007.10.14 4377
238 Railway Buffer Stop Using Progressive Compression Process file Kwanghyun Ahn Youn Ki...  2010.12.24 4290
237 Development of Buffer Stop Using Progressive Compression Process file Kwanghyun Ahn Youn Ki...  2009.12.03 4271