Conference
Numerical simulation and optimization of ballistic protection structures
| Title: | Numerical simulation and optimization of ballistic protection structures |
|---|---|
| Authors: | Garofalo, Giovanni, Longère, Patrice, Moussaoui, K. |
| Contributors: | Garofalo, Giovanni, J. F. Silva Gomes, Shaker A. Meguid |
| Publisher Information: | 2025. |
| Publication Year: | 2025 |
| Subject Terms: | ISIGHT, Optimisation, Terminal ballistics, [PHYS.MPHY] Physics [physics]/Mathematical Physics [math-ph], [INFO.INFO-IA] Computer Science [cs]/Computer Aided Engineering |
| Description: | Traditional passive systems for ballistics mainly involve the use of heavy materials. For example, we have: High-hardness steels, reinforced aluminium alloys, and ceramics. A traditional approach cannot consider all the issues related to ballistic protection. Hence, we developed a few ballistics functions that can describe the performance of passive systems. Some of these have already been considered in the previous study, such as: projectile destabilisation, erosion, and kinetic energy absorption.Studies in this field have shown that different materials can stop projectiles differently; therefore, we can highlight the ballistic limit velocity as a parameter when evaluating the effectiveness of a protection system. The traditional approach is experience-based. We resort to the opposite process:Based on numerical simulations and optimisation, we propose a virtual material that can meet these functions and then compare the results with experimental data. We defined a simplified model by means of ABAQUS Commercial Code representing the impact of a NATO 7,62 AP Projectile on a monolayer aluminium tile; we identified and approximated the parameters imposing Johnson-Cook Plasticity and Damage simplified laws. Then impose a constraint on the Plastic Work. We performed the simulation for an initial velocity, extracted the residual velocity of the projectile and performed the average. By means of an optimisation plugin called Simulia ISIGHT. We defined a calibration to find the terms for the reference simulation by respecting the constraint on the plastic work. |
| Document Type: | Conference object |
| Language: | English |
| DOI: | 10.24840/978-972-752-323-8 |
| Access URL: | https://hal.science/hal-05219200v1 |
| Rights: | CC BY |
| Accession Number: | edsair.od......4074..b2e831cbd5ed35fe274f219009e4d054 |
| Database: | OpenAIRE |
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