Ballistic Behavior of Oblique Ceramic Composite Structure against Long-Rod Tungsten Projectiles

Luo, Dujun; Wang, Yangwei; Wang, Fuchi; Cheng, Hongbo; Zhu, Yuman

doi:10.3390/ma12182946

Cited by 11 publications

(7 citation statements)

References 37 publications

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“…The Johnson-Holmquist-1 (JH-1) model is pervasively used in simulations for investigation of the long rod projectile impacting on the ceramic interface of B 4 C and SiC ceramics, the numerical results are consistent with the experimental results [17,[25][26][27][28]. According to our previous work [28], JH-1 model represents SiC behavior well, and it is used in this paper.…”

Section: Materials Models and Constantssupporting

confidence: 60%

Effect of Cover Plate on the Ballistic Performance of Ceramic Armor

Sun

Cao

et al. 2020

Materials

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The interface defeat and dwell can effectively improve the ballistic performance of ceramic armors under high velocity impact of long rod projectiles. Confinement conditions along both axial and radial directions of ceramic armors can affect these behaviors. With the aim of giving an insight into the effect of cover plate thickness and connection mode of cover plates with confining tubes on these behaviors, numerical simulations were performed in which the confined silicon carbide (SiC) targets with cover plates were impacted by tungsten rods. The pressure on the surfaces of SiC targets with fixed cover plates are compared to that with free cover plates, showing that the plates fixed with the confining tubes can produce higher pressure by way of wedging. With the increase in cover plate thickness, the dwell duration of the tungsten rods on the ceramic interface gradually grows. In addition, the upper and lower limits of transition impact velocities for the SiC targets with cover plates in different connection modes (i.e., free or fixed) were obtained and analyzed. The results show that the increase rate of the transition velocity region for the cover plate with the fixed-mode is relatively stable and lower than with the free-mode. On this basis, the fixed cover plate contributes higher ballistic performances to the SiC target than the free cover plate. It is also noteworthy that the size of transition velocity region does not enlarge linearly with the increase in cover plate thickness due to the slow growth of the upper limit. Accordingly, thickness thresholds exist, which are 5 mm and 6 mm for the fixed and free cover plates, respectively. Considering the ballistic performance and economy, the cover plate with the thickness ranging from 3 mm to 5 mm, i.e., 1.5~2.5 times of the tungsten rod diameter, is ideal for the structural dimensions in this paper.

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Section: Materials Models and Constantssupporting

confidence: 60%

Effect of Cover Plate on the Ballistic Performance of Ceramic Armor

Sun

Cao

et al. 2020

Materials

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“…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.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2021

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This article presents an analysis of the effectiveness of available numerical techniques in mapping the characteristic behavior of ballistic ceramics under projectile impact conditions. As part of the work, the ballistic tests were performed on the layered ceramic/steel composite armor and tested with the 7.62 × 39 mm, armor-piercing incendiary (API) BZ projectile. The experimental tests were then mapped using computer simulations. In numerical analyses, four different techniques were used to describe cubic ceramic tiles Al2O3 placed on the ARMOX 500T steel backing plate, i.e.,: the Finite Element Method without Erosion (FEM), Finite Element with erosion (FEM + Erosion), Smoothed Particles Hydrodynamics (SPH) and a hybrid method that converts finite elements to SPH particles after exceeding the defined failure criteria (FEM to SPH conversion). The effectiveness of the individual methods was compared in terms of quality (mapping of characteristic phenomena occurring during the penetration process), quantity (bulge height of the backing plate) and time needed to complete the calculations. On the basis of the results of the experiments and numerical simulations, it was noticed that the most accurate reproduction of the phenomenon of ballistic impact of AP projectiles on ceramic/steel composite armor can be obtained by using a hybrid method, incorporating the conversion of finite elements into SPH particles. This method should be used in cases where accuracy of the results is more important than the time required to complete the calculations. In other situations where the purpose of the calculation is not to determine, for example, the exact value of penetration depth but only to observe a certain trend, the FEM method with defined erosion criteria (variant 2), which is more than 10 times faster, can be successfully used.

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“…Nevertheless, the material properties analyzed in static conditions may not be directly translatable to the dynamic demands of ballistic performance [ 8 , 9 , 10 ]. In addition to their material properties, the ballistic performance of these materials can be significantly improved by establishing a reasonable structure [ 11 , 12 , 13 , 14 , 15 ]. For example, the ballistic limit can be increased by adjusting the thickness ratio and the restraint form of the ceramic block.…”

Section: Introductionmentioning

confidence: 99%

Ballistic Performance of Polyurea-Reinforced Ceramic/Metal Armor Subjected to Projectile Impact

et al. 2022

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Although polyurea has attracted extensive attention in impact mitigation due to its protective characteristics during intensive loading, the ballistic performance of polyurea-reinforced ceramic/metal armor remains unclear. In the present study, polyurea-reinforced ceramic/metal armor with different structures was designed, including three types of coating positions of the polyurea. The ballistic tests were conducted with a ballistic gun; the samples were subjected to a tungsten projectile formed into a cylinder 8 mm in diameter and 30 mm in length, and the deformation process of the tested targets was recorded with a high-speed camera. The ballistic performance of the polyurea-reinforced ceramic/metal armor was evaluated according to mass efficiency. The damaged targets were investigated in order to determine the failure patterns and the mechanisms of interaction between the projectile and the target. A scanning electron microscope (SEM) was used to observe the microstructure of polyurea and to understand its failure mechanisms. The results showed that the mass efficiency of the polyurea-coated armor was 89% higher than that of ceramic/metal armor, which implies that polyurea-coated ceramic armor achieved higher ballistic performance with lighter mass quality than that of ceramic/metal armor. The improvement of ballistic performance was due to the energy absorbed by polyurea during glass transition. These results are promising regarding further applications of polyurea-reinforced ceramic/metal armor.

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Ballistic Behavior of Oblique Ceramic Composite Structure against Long-Rod Tungsten Projectiles

Cited by 11 publications

References 37 publications

Effect of Cover Plate on the Ballistic Performance of Ceramic Armor

Effect of Cover Plate on the Ballistic Performance of Ceramic Armor

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

Ballistic Performance of Polyurea-Reinforced Ceramic/Metal Armor Subjected to Projectile Impact

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