scholarly journals Single and double shock initiation modelling for high explosive materials in last three decades

2016 ◽  
Vol 146 ◽  
pp. 012041 ◽  
Author(s):  
T. Hussain ◽  
Liu Yan
Keyword(s):  
High Explosive ◽  
Shock Initiation ◽  
Explosive Materials

Behaviors of High Explosive near the Critical Conditions for Shock Initiation of Detonation

2007 ◽  
Vol 566 ◽  
pp. 15-22 ◽  
Author(s):  
Shiro Kubota ◽  
Yuji Ogata ◽  
Yuji Wada ◽  
Tei Saburi ◽  
Kunihito Nagayama
Keyword(s):  
Shock Front ◽  
High Speed ◽  
High Explosive ◽  
Critical Conditions ◽  
High Speed Photography ◽  
Shock Initiation ◽  
Donor And Acceptor ◽  
Inner Diameter ◽  
Detonation Transition ◽  
Reaction Wave

The behaviors of the high explosive near the critical conditions for shock initiation of detonation are investigated by high speed photography and pressure measurements in gap tests. The sample is RDX base explosive, and the inner diameter of donor and acceptor charges is 26 mm. Gap material is PMMA. Near the critical condition, the results under the following conditions have been discussed. 1) Shock to detonation transition (SDT) take place in acceptor, 2) The SDT does not occur, but the reaction wave affects the leading shock front in acceptor, and 3) The gap length in which the effect of the reaction wave to shock front almost disappears. These results are very useful to construct the initiation model for solid explosive.

Shock Initiation of Covered Flake JH‐2 High Explosive by Simultaneous Impact of Multiple Fragments

2020 ◽  
Vol 45 (7) ◽  
pp. 1133-1144
Author(s):  
Yi‐Ming Li ◽  
Wen‐Bin Li ◽  
Qing Zhang ◽  
Xiao‐Ming Wang ◽  
Jun‐Hao Liu ◽  
...  
Keyword(s):  
High Explosive ◽  
Shock Initiation ◽  
Simultaneous Impact

MOLECULAR DYNAMIC SIMULATIONS OF SOLID NITROMETHANE UNDER HIGH PRESSURES

2010 ◽  
Vol 09 (01) ◽  
pp. 315-325 ◽  
Author(s):  
FENG GUO ◽  
HONG ZHANG ◽  
XINLU CHENG
Keyword(s):  
Hydrogen Bond ◽  
High Pressure ◽  
Hydrogen Bonding ◽  
Molecular Dynamic ◽  
High Pressures ◽  
High Explosive ◽  
Structure Change ◽  
Molecular Dynamic Simulations ◽  
Dynamic Simulations ◽  
Explosive Materials

We report ReaxFF molecular dynamic simulations of structure change of crystalline nitromethane and the formation of hydrogen bond under high pressure. Under high pressure, the angles between C–N bonds and X, Y and Z axes have changed. Through the calculation of g(r) of O and H atoms, we found a new peak near 1.6 Å, which indicates the formation of the hydrogen bond between O and H atoms. We calculated the distribution of the angles of the C–N bonds orientations, the distribution of the dihedral angle of CNOO , and the charge distribution of nitromethane molecules under various pressures, and made a comparison between low and high pressures. The effects of hydrogen bonding in high explosive materials are discussed.

Sign in / Sign up

Export Citation Format

Share Document