Obiekt

Alternative title:

Badania numeryczne procesu napędzania odłamków 122 mm rakietowego pocisku M-21OF

Contributor:

Bartosz FIKUS

Abstract:

This paper presents numerical simulations of 122 mm M-21OF rocket fragments propulsion. A simplified geometry of the rocket was constructed and analysed with two main numerical FE approaches: a mesh-based lagrangian-eulerian FSI method and a coupled meshless SPH–lagrangian approach. The resulting fragment velocities were compared with those obtained from an analytical approach (Gurney formula). The shell fragmentation process was also successfully depicted. Both numerical approaches differed from the analytical velocity results to a comparable degree. Considering that the Gurney energy of a high-explosive is obtained from cylinder expansion tests, results obtained with the Gurney method can be treated as a reference point and validation method for natural fragmentation warhead models.

Place of publishing:

Warszawa

Publisher:

Wojskowa Akademia Techniczna

Date created:

2010 r.0

Date submitted:

2022-07-15

Date accepted:

2022-10-03

Date issued:

2024-06-30

Extent:

B5

Identifier:

oai:ribes-88.man.poznan.pl:2705

Call number:

doi:10.5604/01.3001.0054.6154

Electronic ISSN:

2720-5266

Print ISSN:

2081-5891

Language:

angielski

License:

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Rights holder:

Wojskowa Akademia Techniczna

Starting page:

55

Ending page:

70

Volume:

15

Journal:

PROMECH

Keywords:

mechanical engineering, terminal ballistics, numerical simulation, initial fragment velocity, LS-DYNA