Numerical analysis for design of bioinspired ceramic modular armors for ballistic protections

Abstract

The exigent requirements for personal protections in terms of energy absorption and ergonomics have led to increasing interest in bioinspired protections. This work focuses on the numerical analysis of ballistic behavior of different bioinspired geometries under impact loadings. Ceramic armors based on ganoid fish scales (the type exhibited by gars, bichirs and reedfishes), placoid fish scales (characterizing sharks and rays) and armadillo natural protection have been considered. Different impact conditions are studied, including perpendicular and oblique impacts to surface protection, different yaw angle, and multiple impacts. Main conclusion is related to the improved efficiency of modular armors against multiple shots exhibiting more localized damage and crack arrest properties. Moreover, its potential ergonomic is a promising characteristic justifying a deeper study.

Comparison of Numerical Simulation Techniques of Ballistic Ceramics under Projectile Impact Conditions

“…Therefore, their task is to crush or blunt the impacting projectile and to absorb a part of its kinetic energy, mainly through the mechanism of brittle cracking. The ceramic layer in the armor is usually composed of tiles with the base of a quadrilateral or hexagon [ 12 , 13 ], or in the form of spurs and elements resembling the natural structure of crustaceans, and carbide armor [ 14 , 15 , 16 , 17 ]. Since ceramic elements are significantly damaged during projectile impact, they are usually small in size in order to reduce the risk of hitting the damaged area again and thus the loss of the protective capacity of the armor, especially during multi-hit firing.…”

Performance of 3D-Printed Bionic Conch-Like Composite Plate under Low-Velocity Impact

“…The force-displacement curves and velocity-time history curves of two group of samples obtained from the drop tower tests are shown in Figures 11,12, 14 and 15, while their damage morphologies are also presented in Figure 16. Table 3 lists EA, peak force, and ∆V for two group of samples.…”

“…Many innovative structures have been inspired by nature, including bio-inspired flexible scaled armor [ 11 ], bio-inspired modular structures [ 12 , 13 ], bionic stab-resistant body armor [ 14 ], and bio-inspired sandwich structures [ 15 , 16 , 17 , 18 ]. For example, inspired by crocodile armor, Guo et al [ 14 ] designed a stab-resistant substrate with a triangular pyramidal structure, and investigated the stab-resistance behavior and dynamic response mechanisms using numerical simulation and experimental testing of a knife impacting the substrate.…”

“…Their results revealed that the triangular pyramidal structure generated twice the internal energy of the knife as the flat substrate, which provided a reference for future design and fabrication of stab-resistant clothing. González-Albuixech et al [ 12 ] used the finite element approach to assess the ballistic performances of bio-inspired modular ceramic armors inspired by ganoid fish scales, placoid fish scales, and armadillo osteoderm. According to their findings, the bio-inspired modular armors exhibited more localized damage and crack arrest properties against numerous shots than monolithic constructions.…”

Postmortem Analysis Using Different Sensors and Technologies on Aramid Composites Samples after Ballistic Impact

“…Perforating threats are presented in war scenarios such as metalcore ammunition and long-range bullets [1]. These projectiles require tough materials to stop and break the bullet, as in the case of ceramic in bulletproof vests [2,3]. Non-perforating projectiles are generally made of lead core.…”