저자명 Chunghee Park, Hoon Huh and Jungsu Park 
Journal Journal of composite materials 
Volume 49 
Number
Pages 425-438 
year 2015 
This article is concerned with the effect of the strain rate on the strain hardening behavior of polymer-bonded explosives at a wide range of strain rates ranging from 0.0001 s–1 to 3870 s−1. Inert polymer-bonded explosive simulants are prepared as specialized particulate composites to acquire analogous mechanical characteristics to polymer-bonded explosives for safety reasons. Uniaxial compressive tests were conducted from quasi-static states to intermediate strain rates ranging from 0.0001 s−1 to 100 s−1 with cylindrical specimens using a dynamic material testing machine (INSTRON 8801) and a high-speed material testing machine. An experimental method was developed for uniaxial compressive tests at intermediate strain rates ranging from 10 s−1 to 100 s−1. Split Hopkinson pressure bar tests were performed at high strain rates ranging from 1250 s−1 to 3870 s−1. Deformation behavior was investigated using captured images from a high-speed camera. The strain hardening behavior of polymer-bonded explosive simulants was formulated as a function of the strain rate with the proposed rate-dependent hardening model based on the DSGZ model. The model is capable of representing the complicated strain rate effects on the strain hardening behavior for rate-sensitive materials with a second-order exponentially-increasing function of the strain rate sensitivity. The rate-dependent hardening model of polymer-bonded explosives can be readily applied to prediction of deformation modes of polymer-bonded explosives in a warhead that undergoes severe dynamic loads.
번호 제목 저자명 날짜 조회 수
125 Evaluation of the Ductile-to-Brittle Transition Temperature of a silicon steel under various strain rate conditions with a servo-hydraulic high speed testing machine file Junbeom Kwon, Hoon Hu...  2017.06.07 150
124 Tension/compression hardening behaviors of auto-body steel sheets at intermediate strain rates file Geunsu Joo, Hoon Huh,...  2017.06.07 102
123 Evaluation of the effect of the strain rate on the tensile properties of carbon–epoxy composite laminates file J. Kwon, J. Choi, H. ...  2017.06.07 94
122 Material properties of the nugget zone in resistance spot-welded DP980 steel joint at various strain rates file N. Park, M. Park, J.B...  2017.06.07 105
121 Fracture-based Forming Limit Criteria for Anisotropic Materials in Sheet Metal Forming file N. Park, H. Huh, S.J....  2017.06.07 88
120 Process design of combined deep drawing and electromagnetic sharp edge forming of DP980 steel sheet file M.K. Choi, H. Huh, an...  2017.06.07 95
119 Fracture modelling of DP780 sheets using a hybrid experimental-numerical method and two-dimensional digital image correlation file Keunhwan Pack, Kwangh...  2015.12.01 1534
118 Tensile Properties of Sheet Metals at Intermediate Strain Rates with Pre-Strain file S. B. Kim and H. Huh  2015.11.18 1180
117 Anisotropy Effect on the Fracture Model of DP980 Sheets Considering the Loading Path file N. PARK, H. HUH, J. B...  2015.06.15 1682
116 Evaluation of dynamic hardening models for BCC, FCC,and HCP metals at a wide range of strain rates Hoon Huh, Kwanghyun A...  2015.02.16 2165
115 Specimen and Grain Size Effects of Al1100 on Strain and Strain Rate Hardening at Various Strain Rates for Al1100 file Junbeom Kwon, Hoon Hu...  2014.08.20 2704
» Rate-dependent hardening model for polymer-bonded explosives with an HTPB polymer matrix considering a wide range of strain rates file Chunghee Park, Hoon H...  2014.04.11 3630
113 New pseudo-elastic model for polymer-bonded explosive simulants considering the Mullins effect file Kee Sun Yeom Sehwan J...  2013.12.10 3957
112 A Phenomenological energy-based Model for PBX Simulants Considering the Mullins Effect file Kee Sun Yeom Sehwan J...  2013.12.10 3392
111 Strain Hardening Model of Pure Titanium Considering Effects of Deformation Twinning file Kwanghyun Ahn, Hoon H...  2013.09.16 3922
110 Prediction of ductile fracture for advanced high strength steel with a new criterion: Experiments and simulation file Yanshan Lou Hoon Huh  2013.04.08 5703
109 Effect of strain rate on plastic anisotropy of advanced high strength steel sheets file Jeehyang Huh Hoon Huh...  2013.04.02 3723
108 Consideration of strength differential effect in sheet metals with symmetric yield functions file Yanshan Lou Hoon Huh ...  2013.03.21 3950
107 Material Behaviors of PBX Simulant with Various Strain Rates [1] file Chunghee Park Sehwan ...  2013.01.08 5913
106 Extension of a shear-controlled ductile fracture model considering the stress triaxiality and the Lode parameter file Yanshan Lou Hoon Huh  2012.12.11 5273