Deflection effect and mechanism of semi-cylindrical ceramic composite armor for flat-ended rod projectile

Jiang, Anbang; Li, Yongqing; Li, Dian; Hou, Hetao

doi:10.1016/j.ceramint.2022.07.064

Cited by 5 publications

(4 citation statements)

References 30 publications

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“…The projectile deflection process in this study is similar to that reported in the literature [27], but in the process of projectile penetration, due to the ogive nose of the projectile head, the contact area between the projectile head and the ceramic is large at the initial moment when the projectile hits the ceramic. This allows the projectile to deflect slightly more than the flat-ended rod projectile in the first stage.…”

Section: Backplate Failure Mode Analysissupporting

confidence: 85%

“…The ceramic is surrounded by steel frames of equal height to constrain its displacement. Among them, the forming process of boron carbide and silicon carbide and the main mechanical properties of boron carbide, silicon carbide, and 12MnCrNi steel can be found in the literature [27].…”

Section: Projectile and Target Platementioning

confidence: 99%

“…The mesh size of the back plate and the rectangular plate of the ceramic is 0.75 mm. The constitutive model of B4C, SiC ceramics using the JH-2 model, metal using the Cowper-Symonds model, the introduction of two constitutive models and the detailed material parameters of B4C, SiC ceramics and 12MnCrNi can be observed in the literature [27]. According to Refs.…”

Section: Numerical Modelmentioning

confidence: 99%

“…The distribution is shown in Figure 20, accounting for 66.67%, In order to reflect the anti-penetration performance of the semi-cylindrical ceramic composite armor more directly, the area of the composite armor is divided according to the different anti-penetration performance. The division criteria are the same as in the literature [27], and the remaining characteristics of the projectile body are shown in Table 5, where E plate is the residual kinetic energy of the projectile with the same initial velocity when penetrating the equivalent homogeneous ceramic composite armor. According to the division criteria and the above residual characteristics of the projectile body, the composite armor can be divided into three areas, whose penetration resistance decreases successively, which are named as the strong protection zone, secondary protection zone, and weak protection zone.…”

Section: Influence Of Impact Point On Anti-penetration Performancementioning

confidence: 99%

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Study on Anti-Penetration Performance of Semi-Cylindrical Ceramic Composite Armor against 12.7 mm API Projectile

Jiang

et al. 2022

Crystals

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To explore the anti-penetration performance of the specially shaped ceramic/metal composite armor, such an armor is designed and fabricated using a semi-cylindrical projectile resistant ceramic and metal back plate, and its anti-penetration performance for the 12.7 mm armor-piercing incendiary (API) projectile (also known as the 0.50 caliber API projectile) is investigated experimentally and numerically. The results show that due to the significant attitude deflection during projectile penetration, the penetration into the designed ceramic composite armor is quite different from that into the conventional homogeneous ceramic/metal composite armor, which can be roughly divided into the following four stages: asymmetric erosion of the projectile, ceramic cone squeezing movement, back plate failure and projectile exit. The failure mode of the back plate is mainly dishing deformation and petaling failure. When obvious attitude deflection occurs to the projectile, the breaches in the back plate are elliptical in varying degrees, and the height and size of petals are apparently different. The area of the composite armor is divided into different zones according to its anti-penetration performance. The influence of the ratio of semi-cylindrical ceramic diameter to projectile core diameter ξ on the anti-penetration performance is studied under constant areal density. The results show that the deflection effect of the composite armor is small when the ratio ξ is less than 2, and the anti-penetration performance is the strongest when ξ is close to 2. With the increase in the initial velocity of the projectile, the deflection effect of the composite armor on the projectile gradually weakened, and the erosion effect gradually increased.

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Section: Backplate Failure Mode Analysissupporting

confidence: 85%

Section: Projectile and Target Platementioning

confidence: 99%

Section: Numerical Modelmentioning

confidence: 99%

Section: Influence Of Impact Point On Anti-penetration Performancementioning

confidence: 99%

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