Research on Dynamic Fracture Behavior of Polymer Bonded Explosive Simulant Based on Cohesive Crack Model

doi:10.3969/j.issn.1000-1093.2017.12.011

Abstract

Abstract: The dynamic tensile fracture behavior of polymer bonded explosive simulant was investigated. The experimental test was performed on notched semi-circular bending (NSCB) samples of the material by using the split Hopkinson pressure bar(SHPB) apparatus. With the aide of a high-speed camera, the dynamic displacement and strain field during the dynamic fracture process were obtained by the digital image correlation (DIC) technique. Based on cohesive crack model (CCM), the numerical simulation of the same conditions was performed. Compared with the results obtained by simulation and experiment, the good agreement was found for the time history of tensile stress and the displacement and strain fields during dynamic fracture. The behavior of crack propagation of PBX during NSCB test was analyzed by the CCM. Furthermore, the width of crack in NSCB sample is about 15% smaller than the experimental results. Key

Key words: explosionmechanics, cohesivecrackmodel, dynamicNSCBexperiment, polymerbondedexplosive, techniqueofdigitalimagecorrelation

CLC Number:

CUI Yun-xiao, CHEN Peng-wan, GUO Bao-qiao, David A. Cendón, ZHOU Zhong-bin. Research on Dynamic Fracture Behavior of Polymer Bonded Explosive Simulant Based on Cohesive Crack Model[J]. Acta Armamentarii, 2017, 38(12): 2379-2385.

References

［1］陈鹏万，黄风雷. 含能材料损伤理论及应用[M]. 北京: 北京理工大学出版社, 2006.
CHEN Peng-wan, HUANG Feng-lei. Damage theory and application of energetic materials[M]. Beijing: Beijing Institute of Technology Press, 2006. (in Chinese)

[2] Grantham S G, Siviour C R, Proud W G, et al. High-strain rate Brazilian testing of an explosive simulant using speckle metrology[J]. Measurement Science and Technology, 2004, 15(9): 1867-1870.
[3] Zhou Y X, Xia K, Li X B, et al. Suggested methods for determining the dynamic strength parameters and mode-I fracture toughness of rock materials[J]. International Journal of Rock Mechanics & Mining Sciences, 2012, 49:105-112.
[4] Zhou Z B, Chen P W, Duan Z B. Comparative study of the fracture toughness determination of a polymer-bonded explosive stimulant [J]. Engineering Fracture Mechanics, 2011,78(17): 2991-2997.
[5] Chen R, Cheng L, Lin Y, et al. Studies on the dynamic fracture properties and failure modes of a PBX[J]. International Journal of Applied Mechanics， 2014, 6(4):1450039.
[6] Dienes J K, Zuo Q H, Kershner J D. Impact initiation of explosives and propellants via statistical crack mechanics[J]. Journal of the Mechanics and Physics of Solids, 2006, 54(6):1237-1275.
[7] 傅华，李俊玲，谭多望. PBX炸药动态Brazilian试验及数值模拟研究[J]. 高压物理学报, 2012, 26(2): 148-154.
FU Hua, LI Jun-ling, TAN Duo-wang. Dynamic Brazilian test and simulation of plastic-bonded explosives [J]. Chinese Journal of High Pressure Physics, 2012, 26(2): 148-154. (in Chinese)
[8] 王鹏飞，黄西成，何颖波. 基于线性Drucker-Prager模型的PBX准静态弹塑性变形分析[J]. 含能材料, 2015, 23(5):464-471.
WANG Peng-fei, HUANG Xi-cheng, HE Ying-bo. Quasi-static elastoplastic deformation analysis of PBX based on linear Drucker-Prager model[J]. Chinese Journal of Energetic Materials, 2015, 23(5):464-471.(in Chinese)
[9] 谢凤英，张丘，刘维，等. 高聚物粘结炸药铣削时的边缘崩块形成机理分析[J]. 兵工学报, 2016, 37(5): 823-828.
XIE Feng-ying, ZHANG Qiu, LIU Wei, et al. Preliminary research on formation mechanisms of edge spalling in PBX milling [J]. Acta Armamentarii, 2016, 37(5): 823-828.(in Chinese)
[10] Planas J, Elices M, Guinea G V, et al. Generalizations and specializations of cohesive crack models [J]. Engineering Fracture Mechanics, 2003, 70(14): 1759-1776.
[11] Reyes E, Gálvez J C, Casati M J, et al. An embedded cohesive crack model for finite element analysis of brickwork masonry fracture [J]. Engineering Fracture Mechanics, 2009, 76(12): 1930-1944.
[12] 崔云霄，陈鹏万，David A. Cendón，等.基于内聚裂纹模型的高聚物粘结炸药模拟材料动态巴西实验的数值模拟[J]. 兵工学报, 2016,37 (9): 1639-1645.
CUI Yun-xiao, CHEN Peng-wan, Cendón D A, et al. Numerical simulation of dynamic Brazilian test of polymer bonded explosive simulant based on cohesive crack model[J]. Acta Armamentarii, 2016, 37 (9): 1639-1645. (in Chinese)

第38卷第12期
2017 年12月兵工学报ACTA
ARMAMENTARIIVol.38No.12Dec.2017

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