Building and Validation of Numerical Models of the B-32 Type Armour-Piercing Projectiles

• Autorzy: Wiśniewski A. , Żochowski P.
• Konferencja: Scientific Aspects of Armament and Safety Technology. International Armament Conference (9. ; 25-28.09.2012 ; Pułtusk, Poland)
• Języki publikacji: EN

Abstrakty

EN

Process of building and the validation of the numerical models of the B-32 type armour-piercing incendiary (API) projectile is described in this article. Results of projectile compression tests (static and under high strain rates with the use of the modified Split Hopkinson Pressure Bar) are shown. On the basis of this, the values of the Johnson–Cook (J–C) strength model parameters for the projectile core material (N12e steel) were determined. This article presents results gained from simulations of the tests, in which the B-32 type projectile was modelled with the use of determined values of the J–C strength and failure models parameters. The process of the parameters values verification was described, in which the stress and strain obtained from samples in experiments and simulations were compared. Additional verification of the determined parameters values was comparison to the depth of penetration (DP) tests results of the Armox 500T plates fired with the 12.7 mm B-32 type projectile, obtained experimentally and in simulations. Small differences (< 5%) between stress and penetration depths obtained in the simulations and in the tests showed that the J–C parameter values were determined correctly.

Słowa kluczowe

EN

mechanics; terminal ballistics; numerical simulations of penetration; penetration of steel; API projectile

• Wydawca: Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa
• Rocznik: 2013
• Tom: Vol. 4, Nr 2 (12)
• Strony: 19--30
• Opis fizyczny: Bibliogr. 6 poz., il., wykr.

Twórcy

autor

Wiśniewski A.

autor

Żochowski P.

• Military Institute of Armament Technology, 7 Wyszyńskiego St., 05-220 Zielonka, Poland

Bibliografia

• [1] Johnson G. R., Cook W. H., A Constitutive model and data for metals subjected to large strain, high strain rate and high temperature, Proceedings of the 7th International Symposium on Ballistics, pp. 541-547, 1983.
• [2] Johnson G. R., Cook W. H., Fracture characteristics of three metals subjected to various strains, strain rates, temperatures and pressures, Engineering Fracture Mechanics, vol. 21, pp. 31-48, 1985.
• [3] Hancock J. W. and Mackenzie A. C., On the Mechanism of Ductile Failure in High-Strength Steels Subjected to Multi-Axial Stress-States, Journal of the Mechanics and Physics of Solids, vol. 24, pp. 147-175, 1976.
• [4] Nilsson M., Constitutive model for Armox 500T and Armox 600T at low and medium strain rates, s. 1, Swedish Defence Research Agency, TR FOIR-1068-SE, 2003.
• [5] Skoglund P., Nilsson M., Tjernberg A., Fracture modelling of a high performance armour steel, Journal de Physique IV, France, vol. 134, pp. 197-202, 2006.
• [6] Borvik T., Dey S., Clausen A. H., Perforation resistance of five different high strength steel plates subjected to small-arms projectiles, International Journal of Impact Engineering, vol. 36, pp. 948-964, 2009.