Vulnerability Study Of Charge Structure On Explosive

The vulnerability of weapon and ammunition has been attracting more and more researcher's attention in order to improve their system survival in battlefield and security of production, transport and service management, and to adapt to scurvy surrounding of ammunition in battlefield. One of important directions on explosive research and development is to reduce its vulnerability. This paper aims to look for a new approach to reduce vulnerability of explosive through charge structure.In this dissertation, energy performance of single-base propellants, triethyleneglycol dinitrate (TEGN ) propellants and double-lead-propellants (double-base-propellants with lead oxide) were analyzed, and they were served respectively for main explosive charge. Fillings fitted for different charge were chosen. Theoritical formulae for estimated parameters of detonation performance were derived for different charge filled with oxidant gel solution. The influence of different charge structure on detonation were studied through witness steel-plate and ionization method: 1) deterrent-coated granular charge of single-base propellants was exploded incompletely, and filled with oxidant gel solution was exploded completely in not less than φ 50mm shell. 2) Tube charge of single-base propellants had similar effect with granular ones. 3) Insensitive TEGN propellants were immerged by aqueous solution of oxidant in advance. And then it was arranged by the way of landscape orientation in φ 110mm shell, if oxidant gel solution was not filled ,it was detonation incompletely, and if oxidant gel was filled, it was detonation completely. However, if charge was arranged in φ 110mm shell at random or by the way of vertical, it was detonation incompletely no matter whether the oxidant gel solution was filled. 4) Steady detonation of charge was not affected by axial clearances (the size 2mm) of double-lead-propellants charge, but the detonation stability was affected greatly by charge radial clearance size and segments length, especially one of the end near the booster. From the experimental result, the function of detonation velocity with segment length and clearance size was obtained for non-whole charge in a definite range.The detonation property of varies charge structure of double-lead-propellants were simulated. Based on the basic assumption, discrete difference format was set up and the numerical simulation software to simulating the process of explosive detonation and spread of its detonation wave was programmed. The detonation process, spread for detonation wave and detonation velocity of TNT and explosive B were analyzed using explosive analyzing function of ANSYS/LSDYNA, and reliability of software was proved. The detonation and spread processes of different charge structure of double-lead-propellant as...