Two-dimensional mesoscale discrete element simulation of shock response of explosives

YU Ji-dong; WANG Wen-qiang; LIU Cang-li; ZHAO Feng; SUN Cheng-wei

doi:10.11883/1001-1455(2008)06-0488-06

Volume 28 Issue 6

Sep. 2014

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Article Navigation > Explosion And Shock Waves > 2008 > 28(6): 488-493

YU Ji-dong, WANG Wen-qiang, LIU Cang-li, ZHAO Feng, SUN Cheng-wei. Two-dimensional mesoscale discrete element simulation of shock response of explosives[J]. Explosion And Shock Waves, 2008, 28(6): 488-493. doi: 10.11883/1001-1455(2008)06-0488-06

Citation:

YU Ji-dong, WANG Wen-qiang, LIU Cang-li, ZHAO Feng, SUN Cheng-wei. Two-dimensional mesoscale discrete element simulation of shock response of explosives[J]. Explosion And Shock Waves, 2008, 28(6): 488-493. doi: 10.11883/1001-1455(2008)06-0488-06

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Two-dimensional mesoscale discrete element simulation of shock response of explosives

doi: 10.11883/1001-1455(2008)06-0488-06

1.
Laboratory for Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, Sichuan, China

Publish Date: 2008-11-25

Abstract

Abstract

Shock response of plastic bonded explosives were simulated at the grain scale using the discrete element method. The mesoscopic structures of explosives were created based on the Voronoi tessellation. Through simulations on explosives with and without a pore inside, the important impact of mesoscopic structure on the formation and distribution of hot spots was demonstrated. In these sample calculations, it is found that the temperature localization is mainly due to visco-plastic deformation whereas the mechanisms of friction and bulk viscosity can be ignored.
- mechanics of explosion,
- shock response,
- discrete element method,
- plastic bonded explosives,
- hot spots

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