Numerical Aspects of Penetration Simulation

• Autorzy: Morka A. , Zduniak B. , Niezgoda T.
• Języki publikacji: EN

Abstrakty

EN

Several numerical methods were studied as means of solution to a penetration problem. The Element Free Galerkin (EFG), Smooth Particle Hydrodynamics (SPH), Finite Element Analysis (FEA) methods were considered. The above mentioned algorithms implemented in the LS-DYNA code were applied. Additionally, the mesh density was taken into consideration. The reference case assumed an average node to node distance of 1 mm. The finer and coarser mesh densities were analysed. The full 3D models of the projectile and target were developed with a strain rate and temperature dependent material constitutive relations. An impact of 12.7x108 mm B32 armour piercing projectile on a 80 mm thick block of 7017 aluminium alloy was modelled. The results obtained by a computer simulation were validated and then verified by experimental data. The study of the erosion criteria involves defining the most efficient and reliable way of removing the failed and extremely deformed parts of the projectile and targets. Generally, EFG method applied to solve the perforation/penetration problems can be characterized as a very stable, reliable and effective method.

Słowa kluczowe

EN

computer simulations; EFG; SPH; FEM; penetration problem; model validation

• Wydawca: Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa
• Rocznik: 2011
• Tom: Vol. 2, Nr 3 (5)
• Strony: 21--30
• Opis fizyczny: Bibliogr. 10 poz., wykr.

Twórcy

autor

Morka A.

autor

Zduniak B.

autor

Niezgoda T.

• Department of Mechanics and Applied Computer Science, Military University of Technology, 2 Gen. S. Kaliskiego St., 00-908 Warsaw, Poland

Bibliografia

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• [8] Hughes T. J. R., The Finite Element Method: Linear Statistic and Dynamic Finite Element Analysis, 2000.
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