Fractographic Assessment and FEM Energy Analysis of the Penetrability of a 6061-T Aluminum Ballistic Panel by a Fragment Simulating Projectile

Nieoczym, A.; Kazimierz, Drozd

doi:10.12913/22998624/129951

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…In order to accelerate the performed calculations, the bullet model was designed as a nondeformable shell object, type Discrete rigid, base feature Shell, with a mesh type R3D4 (a 4-node 3-D bilinear rigid quadrilateral) composed of 700 finite elements. The bullet geometry is inspired by the 9 × 19 mm Parabellum pistol cartridge (Nieoczym & Drozd, 2021).…”

Section: 𝜂 = −𝑝 𝑞mentioning

confidence: 99%

“…It has also been observed that the most favourable situation is that the structure of the armour plate is not damaged by the projectile, which results in the ballistic protection of the plate not being affected. It should be borne in mind that in certain situations increasing the angle of inclination of the plate is not a fully effective method of protection, due to the possibility of the aforementioned ricochets causing damage to other people or other vehicles (Nieoczym & Drozd, 2021).…”

Section: Introductionmentioning

confidence: 99%

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Analysis of the Effect of Projectile Impact Angle on the Puncture of a Steel Plate Using the Finite Element Method in Abaqus Software

ROSŁANIEC

2022

acs

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This paper deals with the punctureability of a steel plate by a projectile at different angles of attack. The effect of the projectile angle on the force required to penetrate a plate made of A36 steel is presented using Finite Element Method calculation software. Using Abaqus software, a dynamic model of a projectile striking a plate was modelled and the force required to penetrate a 5 mm thick steel plate was presented. The introduction gives an overview of the genesis of the topic and a brief historical background. The chapter on numerical analysis presents the numerical model used and how the simulation was modelled. In the conclusions, a summary of the results was formulated and conclusions were drawn regarding the observations and insights of the analysis. The force required to penetrate the plate was observed to increase with increasing projectile angle of attack and it was found that, as the angle of the plate increased, the force required to penetrate increased.

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Section: 𝜂 = −𝑝 𝑞mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of the Effect of Projectile Impact Angle on the Puncture of a Steel Plate Using the Finite Element Method in Abaqus Software

ROSŁANIEC

2022

acs

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Experimental and numerical studies of ballistic resistance of hybrid sandwich composite body armor

Khalaf,

Hamzah

2024

Open Engineering

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Defense mechanisms remain important and indispensable due to the different types of pistols and ordnance besides many guns. Hybrid composite sandwich panels are an attractive focus because of their ingrained characteristics, such as high stuffiness and high energy absorption. Hybrid composite sandwich panels are among the most important in armoring various structures. Despite the high density of these panels, they have significant qualities that qualify them to be the first selection for use in armored vehicles or body armor. Recently, there have been several types of structures, and selecting the appropriate structure as armor against the projectiles is very important. The study subjected three samples to the ballistic impact test using a 7.62 × 39 mm bullet. The first sample, S1, consists of ultra high molecular weight polyethylene (UHMWPE)/epoxy, unfilled honeycomb core, Kevlar/epoxy, unfilled honeycomb core, Kevlar/epoxy, and UHMWPE/epoxy; the second sample, S2, comprises Kevlar/epoxy, unfilled honeycomb core, Kevlar/epoxy, unfilled honeycomb core, and UHMWPE/epoxy, and the third sample, S3, comprises Al2O3, Kevlar/epoxy, unfilled honeycomb core, carbon/epoxy, unfilled honeycomb core, and carbon/epoxy. ABAQUS software was used to evaluate the ballistic impact numerically, and after that, the study examined the same armor samples experimentally. The results manifested that only the armor S3 succeeded in stopping the bullet. This is attributed to the structure of the cores, which helps compress and accumulate the cells under the projectile. The speeds of the bullet after penetration (residual velocity; VR) were 748.5 and 715.3 m/s for S1 and S2 armors, respectively, where the back face signature for S3 was 1.5 mm, which is optimum and within the allowed range. The total energy absorption of these armors S1, S2, and S3 is 344.65, 539.04, and 2585.66 J. Furthermore, the highest deviation between numerical and experimental approaches is about 2.04% in the VR.

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Inductive 3D numerical modelling of the tibia bone using MRI to examine von Mises stress and overall deformation

Kokz,

Mohsen,

Nile

et al. 2024

Open Engineering

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As the main load bearer throughout the gait cycle, the tibia is a crucial bone in the lower leg that distributes ground reaction forces with each stride. Comprehending the distribution of stress inside the tibia is essential for both avoiding fractures and developing efficient methods of redistributing load to promote healing and biomechanical correction. The study examined the stress, strain, and deformation encountered by the tibia over a 7-s walking cycle using an ANSYS workbench software, using tibia bone under a period of force applied to the boundary condition at intervals of 0.2 s. The tibia encounters stress levels varying from 0 to 1,400 N, exhibiting a regular pattern that aligns with the loading attributes often associated with traditional walking. The research conducted in this study identified the occurrence of maximum stress levels, measuring 25.45 MPa. Additionally, related peak elastic strains and deformations were observed, measuring 2.19 × 10−3 and 2.43 mm, respectively. The patterns that have been seen indicate that there is an initial contact of the foot with the ground, followed by the bearing of weight and subsequently the toe-off. These observed patterns closely resemble the natural motion of the foot during the act of walking. Temporal fluctuations in elastic strain through the tibia throughout a gait cycle reveal that the strain is mostly cantered at the medial surface of the tibia. Additional investigation into the elastic properties and overall deformations of the tibia yielded valuable observations on prospective areas of interest within the bone’s structure. These findings are of utmost importance for biomechanical assessments and the identification of potential injury hazards in subsequent research endeavours.

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Fractographic Assessment and FEM Energy Analysis of the Penetrability of a 6061-T Aluminum Ballistic Panel by a Fragment Simulating Projectile

Cited by 3 publications

References 12 publications

Analysis of the Effect of Projectile Impact Angle on the Puncture of a Steel Plate Using the Finite Element Method in Abaqus Software

Analysis of the Effect of Projectile Impact Angle on the Puncture of a Steel Plate Using the Finite Element Method in Abaqus Software

Experimental and numerical studies of ballistic resistance of hybrid sandwich composite body armor

Inductive 3D numerical modelling of the tibia bone using MRI to examine von Mises stress and overall deformation

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