Abstract
This study is mainly based on LS-DYNA to simulate the entire process of high-speed projectile penetration into the steel-ceramic composite target structure. In the process of projectile penetration into the target, the impact speed of projectile, the structure of steel-ceramic composite target plate and other key factors on the target failure and target transient response and the law are explored. The article tried different thickness combinations of the steel plate ceramic structure, obtained the best thickness combination according to the after-effect of penetration, and analyzed the remaining velocity and remaining rod length of the projectile. The results show that the composite target plate has the best protection performance under the condition of the thickness ratio of panel-sandwich-back plate of 1:2:1, and the composite target plate has better anti-penetration performance against projectiles with a speed greater than 1500 m/s.
Highlights
Ceramic materials have excellent mechanical and physical properties due to corrosion resistance, high temperature resistance, wear resistance, and low density compared to steel materials, in the field of high-tech national defense, such as aircraft, ships, vehicles and other key parts of the bulletproof shielding layer and the protection of individual combat is widely used
Ceramic materials have unique advantages that are irreplaceable compared with other materials
The composite armor structure composed of ceramic panels and metal back panels has the advantages of light weight, excellent elasticity resistance and corrosion resistance, and has been widely used
Summary
Ceramic materials have excellent mechanical and physical properties due to corrosion resistance, high temperature resistance, wear resistance, and low density compared to steel materials, in the field of high-tech national defense, such as aircraft, ships, vehicles and other key parts of the bulletproof shielding layer and the protection of individual combat is widely used. The composite armor structure composed of ceramic panels and metal back panels has the advantages of light weight, excellent elasticity resistance and corrosion resistance, and has been widely used It has excellent ballistic properties (including penetration resistance, impact resistance and avalanche resistance). Mastilovics [2] used the dynamic cavity expansion model to study the anti-penetration performance of ceramic materials, derived the calculation formula of the minimum surface density of the target plate and the thickness of the corresponding panel and back plate, and compared the results with the existing test data. Many scholars have conducted research on steel/ceramic composite structures, most of them focus on the effect of composite structure composition on armor penetration efficiency, and lack of research on the impact of projectile velocity and target plate thickness composition on armor penetration efficiency. This paper numerically simulates the interaction performance of projectiles at different speeds penetrating the steel/ceramic structure, analyzes the thickness composition of the target plate and the impact of projectile velocity on the penetration efficiency, and provides references for the optimization design and improvement of composite structures
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