Obiekt

Tytuł odmienny:

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

Współtwórca:

Bartosz FIKUS ; Bartosz FIKUS

Abstrakt:

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.
; 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.

Miejsce wydania:

Warszawa
; Warszawa

Wydawca:

Wojskowa Akademia Techniczna ; Wojskowa Akademia Techniczna

Data utworzenia:

2010 r.0

Data złożenia:

2022-07-15 ; 2022-07-15

Data akceptacji:

2022-10-03 ; 2022-10-03

Data wydania:

2024-06-30 ; 2024-06-30

Rozmiar:

B5 ; B5

Identyfikator:

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

Sygnatura:

doi:10.5604/01.3001.0054.6154 ; doi:10.5604/01.3001.0054.6154

ISSN elektroniczny:

2720-5266 ; 2720-5266

ISSN drukowany:

2081-5891 ; 2081-5891

Język:

angielski ; angielski

Licencja:

kliknij tutaj, żeby przejść ; kliknij tutaj, żeby przejść

Właściciel praw:

Wojskowa Akademia Techniczna ; Wojskowa Akademia Techniczna

Strona początkowa:

55 ; 55

Strona końcowa:

70 ; 70

Tom:

15 ; 15

Czasopismo:

PROMECH ; PROMECH

Słowa kluczowe:

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