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Computational
modeling of tungsten carbide sphere impact and penetration
into high-strength-low-alloy (HSLA)-100 steel targets
Costas G. Fountzoulas, George A. Gazonas and Bryan A. Cheeseman |
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Vol. 2 (2007), No. 10, 1965–1979
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Abstract |
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The current investigation tested the existing material models of tungsten carbide and HSLA-100 steel by comparing available published experimental data, such as the depth and diameter of the impact crater, against the corresponding simulated results. Lagrange and smoothed particle hydrodynamics (SPH) simulations were carried out using an axisymmetric model of the tungsten carbide (WC) projectile and the HSLA-100 target. The Lagrange simulation predicted the crater diameter accurately. The SPH simulation efforts predicted the crater diameter with acceptable accuracy (within 15%) for impact velocities ranging from 830 to 2550 m/s. However, the SPH simulations failed to predict the crater depth for impact velocities greater than 1.5 km/s. The current paper will detail the results of parametric studies conducted using various existing models in an attempt to simulate the observed damage and the efforts to improve the simulation prediction of the experimental data. |
Keywords
computational modeling, Lagrange, smoothed particle
hydrodynamics (SPH), meshless particles, AUTODYN, tungsten
carbide, HSLA-100 steel, impact
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Milestones
Received: 27 June 2007
Accepted: 21 August 2007
Published: 1 December 2007
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Authors |
| Costas G. Fountzoulas | |
| U.S. Army Research Laboratory Weapons and Materials Directorate 2800 Powder Mill Rd Adelphi, MD 20783-1197 United States |
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| George A. Gazonas | |
| U.S. Army Research Laboratory Weapons and Materials Directorate 2800 Powder Mill Rd Adelphi, MD 20783-1197 United States |
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| Bryan A. Cheeseman | |
| U.S. Army Research Laboratory Weapons and Materials Directorate 2800 Powder Mill Rd Adelphi, MD 20783-1197 United States |
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