Szmelter 10-3.pdf (307.95 kB)
Simulation and measurement of fragment velocity in exploding shells
journal contribution
posted on 2009-05-13, 10:36 authored by Joanna SzmelterJoanna Szmelter, Nigel Davies, Chung Kiat LeeThis paper presents simulations of initial velocity distribution of fragments for non-trivial shapes of casing in exploding shells, using a semi-empirical computational model. The key to the proposed approach is the use of transformation of a general geometrical shape to a hollow sphere followed by an application of Gurney principles in the transformed domain. The model is validated against an analytical model for a finite cylindrical charge bounded by a cylindrical shell and identical end-plates. A computation for 105-mm shell with steel casing and aluminium fuze illustrates aspects involved in reliable comparisons of fragmentation models against a standard trial data. Further, a simple and inexpensive experimental procedure based on a pin gauges measurement is described. Measurements obtained for short cylinders and an 81-mm mortar bomb are compared with numerical predictions. The described model responds to the need for an improved, fast assessment tool applicable to practical designs involving geometrically complex multi-material shells. The results highlight a requirement for quality experimental data obtained for complex shapes.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Citation
SZMELTER, J., DAVIES, N. and LEE, C.K., 2007. Simulation and measurement of fragment velocity in exploding shells. Journal of Battlefield Technology, 10 (2), pp. 1-7Publisher
© Argos PressVersion
- VoR (Version of Record)
Publication date
2007Notes
This article was published in the Journal of Battlefield Technology [© Argos Press] which is available from: http://www.argospress.com/jbt/index.htmlISSN
1440-5113Language
- en