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Modelling and Simulation in Engineering
Volume 2014, Article ID 501434, 6 pages
http://dx.doi.org/10.1155/2014/501434
Research Article

Numerical Evaluation of a Light-Gas Gun Facility for Impact Test

1Departments of Mechanical Engineering (EMC) and Chemical Engineering (EQA), Laboratory of Ceramic and Composite Materials (CERMAT), Federal University of Santa Catarina (UFSC), 88040-900 Florianópolis, SC, Brazil
2CMC Tecnologia, Avenida Roberto Galli 1220, 88045-000 Cocal do Sul, SC, Brazil

Received 19 March 2014; Revised 27 June 2014; Accepted 27 June 2014; Published 19 August 2014

Academic Editor: Dimitrios E. Manolakos

Copyright © 2014 C. Rahner et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Experimental tests which match the application conditions might be used to properly evaluate materials for specific applications. High velocity impacts can be simulated using light-gas gun facilities, which come in different types and complexities. In this work different setups for a one-stage light-gas gun facility have been numerically analyzed in order to evaluate their suitability for testing materials and composites used as armor protection. A maximal barrel length of 6 m and a maximal reservoir pressure of a standard industrial gas bottle (20 MPa) were chosen as limitations. The numerical predictions show that it is not possible to accelerate the projectile directly to the desired velocity with nitrogen, helium, or hydrogen as propellant gas. When using a sabot corresponding to a higher bore diameter, the necessary velocity is achievable with helium and hydrogen gases.