| Author | Search for: Downes, Devon1; Search for: Ensan, Manouchehr Nejad; Search for: Li, Lucy |
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| Affiliation | - National Research Council of Canada. Aerospace
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| Format | Text, Article |
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| Conference | 33rd International Symposium on Ballistics, BALLISTICS 2023, October 16-20, 2023, Bruges, Belgium |
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| Subject | adhesives; alumina; aluminum oxide; ductile fracture; numerical methods; piecewise linear techniques; plasticity; plates (structural components); projectiles |
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| Abstract | A numerical investigation is presented in this work to study the ballistic performance of Aluminum Oxide (Al203) ceramic plates bonded to a polycarbonate backing subjected to impacts from 7.62 mm diameter calibre projectiles. The ceramic plate measured 102 × 102 mm with a thickness of 5.8 mm. Numerical models were developed using the explicit finite element code LS-DYNA, which possesses contact, erosion and material failure capabilities particularly suitable for ballistic simulation. The Johnson–Holmquist, Piecewise Linear Plasticity and Plastic Kinematic constitutive material models were used to model the materials behaviors of the ceramic, projectile materials and backing material, respectively. The residual velocity and depth of penetration (DoP) into the backing material was obtained and compared with available experimental data. The simulation was capable of capturing the DoP into the backing with a high degree of accuracy compared to the experimental tests. The results showed that when the ceramic plates were impacted by a projectile, the damage mechanism of the fragmented ceramic included radial and circumferential crack lines along with a pulverized center and a highly eroded bullet. The failure of the bonding adhesive between the ceramic plate and polycarbonate backing was also accurately captured by using the plasticity compression tension material model to simulate the adhesive. |
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| Publication date | 2023-10-16 |
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| Publisher | DEStech Publications |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 46d916d5-25f7-4d48-b56a-1c0c9880fd9e |
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| Record created | 2024-11-26 |
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| Record modified | 2024-11-26 |
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