Object

Alternative title:

Wstępne oszacowania numeryczne wybranych efektów balistyki końcowej powstałych na skutek wybuchu pocisku moździerzowego

Abstract:

Results of theoretical modelling of mortar projectile’s fragments propulsion were shown. Taking into account universality of application of the considered ammunition, it seems to be reasonable to conduct simulations of projectile’s fragments propulsion and interaction with the environment. In the conducted investigations, due to dynamic character of the whole phenomena, characterized by extremely high values of strains and strain’s rate, the meshless explicit approach was used (Smoothed Particle Hydrodynamics method implemented in AUTODYN software). This approach minimalized the negative effects of deformation of “classical” Lagrangian mesh. In order to validate a numerical model, the results were compared with the simplified Gurney’s formula, which provides high accuracy of fragment’s velocity for regular shapes of casing. Comparison of the results showed low value of relative discrepancy (lower than 10%) for the cylindrical part of the casing in which detonation was fully developed and resulted in higher values of relative discrepancy of initial velocity for the non – cylindrical region, especially where the detonation was not developed.

Place of publishing:

Warszawa

Publisher:

Wojskowa Akademia Techniczna

Date created:

2010 r.0

Date submitted:

2017-12-26

Date issued:

2018-03-31

Extent:

B5

Identifier:

oai:ribes-88.man.poznan.pl:2492

Call number:

DOI 10.5604/01.3001.0011.7178

Electronic ISSN:

2720-5266

Print ISSN:

2081-5891

Language:

angielski

Rights holder:

Wojskowa Akademia Techniczna

Starting page:

49

Ending page:

60

Volume:

9

Keywords:

mechanics, Gurney’s formula, mortar projectile, explosion, terminal ballistics, meshless methods