Modal Analysis of Barrels for Assault Rifles

• Autorzy: Lisý P. , Štiavnický M.
• Języki publikacji: EN

Abstrakty

EN

This paper deals with modal analysis of barrels for assault rifles. The barrels are modeled as 3-D objects. Three different barrels for analysis were used. First barrel is fully cylindrical and served as comparison to another two barrels, the design of which is quite close to the real barrels for 5.56 mm and 7.62 mm calibers. The calculation of natural frequencies and corresponding mode shapes was performed using the Finite Elements Method, using the LS-DYNA software system. Modal analysis was solved using the iterative Lanczos method. All three barrels are compared from various viewpoints. In Tables 1-3 the natural frequencies for these barrels and their corresponding mode shapes with modification in gripping and also with application muzzle compensator for two real barrels are listed. Various sizes of natural frequencies versus corresponding modes with modification in gripping and applied muzzle compensator for these barrels are shown on Figures from 4-9.

Słowa kluczowe

EN

modal analysis; barrel; assault rifle

• Wydawca: Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa
• Rocznik: 2012
• Tom: Vol. 3, Nr 2 (8)
• Strony: 7--16
• Opis fizyczny: Bibliogr. 3 poz., wykr.

Twórcy

autor

Lisý P.

autor

Štiavnický M.

• Academy of the Armed Forces of General M.R. Stefanik, Department of Mechanical Engineering, Demanova 393, 031 01 Liptovsky Mikulas, Slovak Republic

Bibliografia

• [1] Procházka S., Seman P., Vídeňka M., Deformation of the Cannon Barrel when Projectile Goes by Muzzle, Proceedings of the 9th Symposium on Weapon Systems, pp. 43-49, University of Defence, Brno, 2009.
• [2] Bitzenbauer J., Franz U., Schweizerhof K., Deformable Rigid Bodies in LS-DYNA with Applications - Merits and Limits, Proceedings of the 5th Europen LS-DYNA Users Conference, Code Developments, Birmingham, 2005.
• [3] LS-DYNA Keyword user's manual, version 971, Livermore Software Technology Corporation, May 2007.