Since 1978
Published in Sarov (Arzamas-16), Nizhegorodskaya oblast

RUSSIAN FEDERAL
NUCLEAR CENTER -
ALL-RUSSIAN RESEARCH INSTITUTE
OF EXPERIMENTAL PHYSICS
 
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SPECIFIC FEATURES OF DETONATION PROPAGATION IN SMALL CROSS-SECTION CHANNELS FOR THE PETN-BASED COMPOSITION

V. B. Titova, N. A. Volodina, M. O. Shirshova, E. V. Khaldeev, Y. M. Sustaeva
VANT. Ser.: Mat. Mod. Fiz. Proc 2024. Вып.1. С. 30-36.

The works to study the processes of detonation wave propagation in the channels equipped with PETN-based (pentraerythritoltetranitrate) composition are currently underway to upgrade the systems of detonation initiation in experimental setups with explosives.
This paper studies specific features of the detonation wave propagation in the small-cross-section channels using model experiments with numerical simulation in the ideal and kinematic approximations. It shows the necessity to account for detonation kinetics in such computations. As a result of the computational analysis, we obtained a characteristic picture of the detonation propagation when the detonation wave follows the shadow zone, and the size of the shadow zone region is estimated after the detonation wave passes the turn of the channel.

Keywords: detonation kinetics, PETN, channels interconnections, numerical simulation.

VERIFICATION OF THE EQUATIONS OF STATE FIR THE EXPLOSION PRODUCTS OF THE PLASTICIZED HMX USING THE EXPERIMENTAL RESULTS ON LINERS ACCELERATION

V. B. Titova, N. A. Volodina, M. O. Shirshova, M. N. Kityukhina, E. N. Bogdanov, A. A. Stanovov
VANT. Ser.: Mat. Mod. Fiz. Proc 2024. Вып.1. С. 42-47.

The work describes the experimental results where continuous registration was carried out for the motion of liners made of aluminum and the tungsten-nickel-iron alloy thrown with the explosion products of the plasticized HMX. The computational analysis is provided for the experimental results on the research on the propelling properties of the plasticized HMX in order to verify the equations of state of its explosion products. Verification of the equations of state of the explosion products was carried out for three forms of the equations of state relying of the experimental data. Involvement of modern experimental research methods allowed for more high-quality verification of the equations of state of the explosion products.

Keywords: explosion products, detonation, equation of state, kinetics, numerical simulation.








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