PBX炸药动态Brazilian试验及数值模拟研究

傅华; 李俊玲; 谭多望

doi:10.11858/gywlxb.2012.02.005

PBX炸药动态Brazilian试验及数值模拟研究

doi: 10.11858/gywlxb.2012.02.005

中国工程物理研究院流体物理研究所冲击波物理与爆轰物理实验室，四川绵阳 621900

基金项目: null

详细信息

通讯作者:
傅华 E-mail:Huafu_103@163.com

计量
- 文章访问数: 7691
- HTML全文浏览量: 319
- PDF下载量: 400
出版历程
- 收稿日期: 2010-08-24
- 修回日期: 2010-10-20
- 发布日期: 2012-04-15

Dynamic Brazilian Test and Simulation of Plastic-Bonded Explosives

National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, CAEP, Mianyang 621900, China

Funds: null

摘要

摘要: 开展了PBX炸药的动态Brazilian试验，获得了不同加载应变率条件下的拉伸强度；通过高速摄影，获得了PBX炸药试样表面裂纹的产生发展过程；采用数字散斑相关方法，获得了试样出现裂纹前的应变场分布。利用离散元方法，开展了考虑PBX炸药细观结构的动态Brazilian数值模拟，获得了损伤演化发展、并形成裂纹的全过程，模拟结果能初步再现PBX炸药的损伤破坏过程。
- PBX炸药 /
- Brazilian试验 /
- 离散元法 /
- 损伤
Abstract: Dynamic Brazilian test of plastic-bonded explosives was investigated by split Hopkinson pressure bar (SHPB). The tensile strengths of three PBXs were acquired under different strain rates. The evolution of crack on sample surface was captured using high-speed camera. The strain field was calculated by digital speckle correlation method before samples occurred to crack. The simulation on dynamic Brazilian test was performed using discrete element method, and the simulation model considering meso-structure was acquired.The simulation results show the produce and evolution process of damage and crack, and the simulation results are in accordance with the experimental results.
- plastic-bonded explosives /
- Brazilian test /
- discrete element method /
- damage

HTML全文

参考文献(12)

Akazawa T. International association of testing and research laboratories for materials and structures [J]. RILEM Bull, 1953, 13: 13-23.

Johnson H D. Mechanical properties of high explosives, MHSMP-74-19 [R]. Amarillo, TX, USA: Mason and Hanger-Silas Mason Co, Inc, 1974.

Johnson H D. Mechanical properties of LX-10-1 evaluated with the diametric disc test, MHSMP-79-08 [R]. Amarillo, TX, USA: Mason and Hanger-Silas Mason Co, Inc, 1979.

Johnson H D. Diametric disc and standard tensile test correlation study, MHSMP-81-22 [R]. Amarillo, TX, USA: Mason and Hanger-Silas Mason Co, Inc, 1981.

Rae P J, Gbldrein H T, PalmerS J P, et al. Studies of the failure mechanisms of polymerbonded explosives by high resolution moue interferometry and environmental scanning electron microscopy [A]//Air Force Research Laboratory. Paper Summaries 11th International Detonation Symposium [C]. Colorado, 1998: 235-239.

Rae P J, Palmer S J P, Goldrein H T, et al. White-light digital image cross-correlation (DICC) analysis of the deformation of composite materials with random microstructure [J]. Optics Lasers in Eng, 2004, 41(4): 635-648

Chen P W, Huang F L, Zhang Y, et al. Brazilian test and its application in the study of the mechanical properties of explosives [J]. Acta Armamentarii, 2001, 22(4): 533-537. (in Chinese)

陈鹏万, 黄风雷, 张瑜, 等. 用巴西实验评价炸药的力学性能 [J]. 兵工学报, 2001, 22(4): 533-537.

Yamaguchi I. A laser-speckle strain gauge [J]. J Phys E: Scientific Instruments, 1981, 14(11): 1270-1273.

Peter W H, Ranson W F. Digital imaging technique in experimental stress analysis [J]. Optical Eng, 1982, 21(3): 427-431.

Fu H, Liu C L, Wang W Q, et al. Preliminary simulation of hot spot formation for plastic bonded explosives at mesoscale [J]. Explosion and Shock Waves, 2008, 28(6): 515-520. (in Chinese)

傅华, 刘仓理, 王文强, 等. 细观尺度下塑料粘结炸药热点生成的初步模拟 [J]. 爆炸与冲击, 2008, 28(6): 515-520.

施引文献

资源附件(0)

访问统计