Modelling of fast jet formation under explosion collision of two-layer alumina/copper tubes

I Balagansky, A Vinogradov, L Merzhievsky


Under explosion collapse of two-layer tubes with an outer layer of high-modulus ceramics and an inner layer of copper, formation of a fast and dense copper jet is plausible. We have performed a numerical simulation of the explosion collapse of a two-layer alumina/copper tube using ANSYS AUTODYN software. The simulation was performed in a 2D-axis symmetry posting on an Eulerian mesh of 3900x1200 cells. The simulation results indicate two separate stages of the tube collapse process: the nonstationary and the stationary stage. At the initial stage, a non-stationary fragmented jet is moving with the velocity of leading elements up to 30 km/s. The collapse velocity of the tube to the symmetry axis is about 2 km/s, and the pressure in the contact zone exceeds 700 GPa. During the stationary stage, a dense jet is forming with the velocity of 20 km/s. Temperature of the dense jet is about 2000 K, jet failure occurs when the value of effective plastic deformation reaches 30.

Full Text:



R. Shell, Detonation Physics, in High-Speed Physics, pt.2, 276-349 (1967)

S.A. Kinelovskii, Yu.A. Trishin: Combustion, Explosion, and Shock Waves, Vol. 16 (1980), pp 504-515 Crossref

W.P. Walters, J.A. Zukas, Fundamentals of shaped charges. Willey–Interscience Publication (1989)

Yu.A. Trishin: J. of Appl. Mech. and Tech. Phys. Vol. 41 (2000), pp 773-787 Crossref

I.A. Balagansky, V.A. Agureikin, I.F. Kobilkin et al.: Int. J. of Impact Eng., Vol. 22 (1999), pp 813-823 Crossref


Copyright (c) 2017 I Balagansky, A Vinogradov, L Merzhievsky

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.