High-Speed Extrustion of Polyethylene in the Acceleration of Projectiles in Ballistic Launchers

Acceleration of projectiles in ballistic launchers by means of high-speed extrusion of polyethylene through a tapered adapter 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 defor...

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Bibliographic Details
Published in:Journal of applied mechanics and technical physics 2019-07, Vol.60 (4), p.768-776
Main Authors: Bykov, N. V., Karneychik, A. S., Makarov, A. A., Tovarnov, M. S.
Format: Article
Language:English
Subjects:
Acceleration
Adapters
Applications of Mathematics
Classical and Continuum Physics
Classical Mechanics
Computer simulation
Deformation
Dynamic models
Extrusion rate
Fluid- and Aerodynamics
Formability
High speed
Launchers
Mathematical Modeling and Industrial Mathematics
Mechanical Engineering
Physics
Physics and Astronomy
Polyethylene
Polyethylenes
Projectiles
Simulation
Velocity
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Summary:Acceleration of projectiles in ballistic launchers by means of high-speed extrusion of polyethylene through a tapered adapter 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 deformable 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 launcher are given. The influence of the geometry of a tapered section and input velocity of the deformable piston on the output velocity of a projectile is experimentally investigated.
ISSN:0021-8944
1573-8620
DOI:10.1134/S0021894419040229