This article is cited in 2 papers

High-rate extrustion of polyethylene in the acceleration of projectiles in ballistic devices

N. V. Bykov, A. S. Karneichik, A. A. Makarov, M. S. Tovarnov

Bauman Moscow State Technical University, Moscow, 105005, Russia

Abstract: Acceleration of projectiles in ballistic devices by means of high-rate extrusion of polyethylene through a conical nozzle is experimentally and theoretically studied. Quasi-one-dimensional gas-dynamic model of a polydisperse mixture of gas and powder particles and a viscoplastic model of a deformed piston are used. The results of numerical simulation of the process under study and the results of a series of shots from a powder ballistic device are given. The influence of the geometry of a conical transition and input velocity of the deformed body on the output velocity of a projectile is experimentally investigated.

Keywords: high-velocity protrusion, body acceleration methods, hydrodynamic effect, internal ballistics, ballistic devices, deformation.

UDC: 539.374, 536.46, 623.5

Received: 19.10.2018
Revised: 17.12.2018
Accepted: 25.02.2019

DOI: 10.15372/PMTF20190422

 English version: Journal of Applied Mechanics and Technical Physics, 2019, 60:4, 768–776

Bibliographic databases:

•