Study on resistance of UHMWPE thin panels to oblique penetration of small arms ammo

SONG Fuchen; GUO Hui; CHEN Yu

doi:10.11883/bzycj-2023-0208

Volume 44 Issue 11

Nov. 2024

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SONG Fuchen, GUO Hui, CHEN Yu. Study on resistance of UHMWPE thin panels to oblique penetration of small arms ammo[J]. Explosion And Shock Waves, 2024, 44(11): 113301. doi: 10.11883/bzycj-2023-0208

Citation:

SONG Fuchen, GUO Hui, CHEN Yu. Study on resistance of UHMWPE thin panels to oblique penetration of small arms ammo[J]. Explosion And Shock Waves, 2024, 44(11): 113301. doi: 10.11883/bzycj-2023-0208

SONG Fuchen, GUO Hui, CHEN Yu. Study on resistance of UHMWPE thin panels to oblique penetration of small arms ammo[J]. Explosion And Shock Waves, 2024, 44(11): 113301. doi: 10.11883/bzycj-2023-0208

Citation:

SONG Fuchen, GUO Hui, CHEN Yu. Study on resistance of UHMWPE thin panels to oblique penetration of small arms ammo[J]. Explosion And Shock Waves, 2024, 44(11): 113301. doi: 10.11883/bzycj-2023-0208

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Study on resistance of UHMWPE thin panels to oblique penetration of small arms ammo

doi: 10.11883/bzycj-2023-0208

SONG Fuchen^{1, 2
,},
GUO Hui^{1, 2
,
,},
CHEN Yu¹

1.
School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
2.
Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Province, Mianyang 621010, Sichuan, China

Received Date: 2023-06-08
Rev Recd Date: 2024-05-13

Available Online: 2024-05-14

Publish Date: 2024-11-15

Abstract

Abstract

In order to solve the problem of high-performance lightweight bulletproof inserts protection of penetration of light weapon killing elements, this paper carried out penetration experiments on ultra-high molecular weight polyethylene (UHMWPE) laminated sheet, analyzed the deformation and failure characteristics of the UHMWPE sheet after penetration and compared the damage morphology of light weapon killing element. A numerical model of UHMWPE laminate against the penetration of light weapon killers was established by using the finite element software LS-DYNA, and the validity of the numerical model was verified by the experimental results of the damage morphology of the target plate, the depth of the depression and the deformation of the warhead. On this basis, the failure mode of the UHMWPE thin plate subjected to oblique penetration by the projectile is investigated by numerical methods, and the influence of the incidence angle on the ricochet phenomenon and the damage morphology of UHMWPE thin plate under the penetration of three kinds of light weapon killing elements is revealed. The results show that the ricochet angles of 7.62 mm×25 mm steel-core bullets and 7.62 mm×39 mm ordinary bullets (steel-core) obliquely penetrating UHMWPE plates are located in the range of 45°–50°; 7.62 mm×25 mm lead-core bullets can be completely ricocheted out when the angle of incidence is greater than 70°, and the rest of the bullets are in the form of broken shrapnel splinters, and the destruction of the bullet body has an effect on the ricochet condition; the oblique penetration bullets produce a large area and a large number of damage patterns at a smaller angle of incidence; the oblique penetration bullets produce a larger area and a larger number of damage patterns in the UHMWPE plates. When the angle of incidence is small, the oblique penetration bullet will produce a larger area and a certain depth of the crater, the next bullet will be easier to penetrate the crater weakness of the fiber plate, and the oblique penetration effect on the thin plate by the secondary penetration of the negative impact, the angle of incidence is larger, the bullet will be more complete ricochet and has a high residual velocity, which will produce a secondary killing of personnel. The research results can be used for UHMWPE thin plate for lightweight military bulletproof insert design to provide reference.
- UHMWPE thin panels,
- light weapon killing element,
- oblique penetration,
- failure mode,
- ricochet angle

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References(35)

References

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