Mechanism-driven analytical modelling of UHMWPE laminates under ballistic impact

Zhang, Rui; Han, Bin; Zhou, Yi; Qiang, Lu-Sheng; Zhao, Chun-Zheng; Zhao, Zhen-Yu; Zhang, Qiancheng; Ju, Yuanyuan; Lu, Tian Jian

doi:10.1016/j.ijmecsci.2023.108132

Cited by 14 publications

(1 citation statement)

References 67 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At present, scholars have studied the process and influencing factors of normal penetration of UHMWPE laminates obtained rich experimental data, [5][6][7][8] and established theoretical calculation models [9][10][11] and numerical simulation methods [12][13][14] that can describe the penetration behavior of the projectile, and can reasonably describe the penetration process of bullet and the failure mode of the UHMWPE target plate. These studies show that, under the action of high-velocity penetration, the UHMWPE target plate will undergo failure phenomena such as interlaminar delamination, interlayer cracking, and fiber extraction.…”

Section: Introductionmentioning

confidence: 99%

Study on the resistance of UHMWPE laminates against oblique penetration of projectiles

Guo,

Song,

Sun

et al. 2024

Polymer Composites

View full text Add to dashboard Cite

To solve the problem of the wall panel of high‐performance shelters protecting against the oblique penetration of projectiles, ballistic experiments were carried out with ultra‐high molecular weight polyethylene (UHMWPE) laminates subjected to normal penetration by high‐velocity projectiles, and the deformation and failure characteristics of UHMWPE laminates were analyzed. The numerical model of the resistance of UHMWPE laminates against penetration of projectiles was established by using the finite element program LS‐DYNA. The validity of the numerical model was verified by the experimental results of damage morphology and the depth of depression of the target plate and the deformation of the warhead. On this basis, the ricochet angle and failure mode of the UHMWPE target plate against projectile penetration were studied numerically, and the impact of the angle of incidence on the residual kinetic energy and normal penetration displacement of the bullet, as well as the damage morphology of the UHMWPE target plate, was revealed by using simulation. The results showed that the ricochet angle of the bullet obliquely penetrating into the UHMWPE target plate was in the range of 45° to 50°; at the initial stage of projectile penetration, the shear fracture failure of the fiber layer mainly occurred at the striking face of the UHMWPE target plate. Under the impact of the warhead deformation, with the reduction of the residual velocity of the bullet, the failure mode gradually changed to the tensile and interlaminar cohesion failure of the fiber layer near the back face; When the angle of incidence was greater than the ricochet angle, the residual kinetic energy of the projectile increased slowly with the increase of the angle of incidence of the bullet and then went up approximately linearly; the normal displacement of the bullet obliquely penetrating into the UHMWPE target plate decreased slowly after reaching the peak, and the peak value of the normal penetration displacement decreased gradually with the increase of the angle of incidence, and the time to peak of the displacement shortened gradually. The damage area of the bulge on the back surface of the UHMWPE target plate after penetration decreased gradually with the increase of the angle of incidence. The research results can provide a theoretical reference for the application of UHMWPE laminates in the design of military bulletproof shelters and armor.

show abstract

Section: Introductionmentioning

confidence: 99%

Study on the resistance of UHMWPE laminates against oblique penetration of projectiles

Guo,

Song,

Sun

et al. 2024

Polymer Composites

View full text Add to dashboard Cite

show abstract

Improving ballistic limits of UHMWPE laminates by gamma‐ray irradiation induced enhancement of interfacial bonding

Qi,

Zhao,

Wang

2024

Polymer Composites

View full text Add to dashboard Cite

Though ultra‐high molecular weight polyethylene (UHMWPE) fibers are promising candidates for the design of body armor against ballistic impact, weak interfacial bonding induced by surface inertness of UHMWPE fibers would inevitably result in the fluctuation of impact resistance. Herein, we deploy a scalable 60Co gamma‐ray irradiation strategy to modify the UHMWPE fibers, which not only improves the roughness of the fiber surface, but also creates new chemical bonding between fibers and polyurethane (PU) resin. Surprisingly, the tensile strength of UHMWPE fiber is maintained very well with the introduction of small pores on surface by gamma‐rays, which exhibits greater advantages than other surface modification methods. It should be attributed to the transformation of crystal structures from orthorhombic phase to more stable hexagonal phase in UHMWPE fibers. Because of the improved adhesion between fibers and PU resin, tensile strength of the UHMWPE/PU prepregs is increased by 18.5% after 10 kGy irradiation. Finally, the V50 ballistic performances of UHMWPE/PU laminates are evaluated. Most of the laminates are penetrated at the initial velocity of ~690 m/s except for the UHMWPE/PU laminates irradiated at 10 kGy. In addition, the delamination and back deformation of the irradiated ones are also alleviated significantly, which show great capabilities in not only preventing ballistic impact, but also reducing the injury degree of the wearer.Highlights A scalable 60Co gamma‐ray irradiation strategy is used to deal with weak interfacial properties of UHMWPE fibers. The roughness of the fiber surface is increased. New chemical bonding between fibers and polyurethane (PU) resin is formed. The tensile strength of UHMWPE fiber is maintained very well. Interfacial properties and ballistic impact limits of laminates are improved.

show abstract

Synthetic and mineral fibers composites for defense application

Techawinyutham

2024

Synthetic and Mineral Fibers, Their Composites and Applications

View full text Add to dashboard Cite

Mechanism-driven analytical modelling of UHMWPE laminates under ballistic impact

Cited by 14 publications

References 67 publications

Study on the resistance of UHMWPE laminates against oblique penetration of projectiles

Study on the resistance of UHMWPE laminates against oblique penetration of projectiles

Improving ballistic limits of UHMWPE laminates by gamma‐ray irradiation induced enhancement of interfacial bonding

Synthetic and mineral fibers composites for defense application

Contact Info

Product

Resources

About