Simulation on penetration of a flat-nosed projectile with attack angle into aramid laminates having varying thickness

JI Haibo; WANG Xin; ZHAO Zhenyu; ZHAO Zhongnan; LI Xue; HAN Jiatong; LU Tianjian

doi:10.11883/bzycj-2022-0231

Volume 43 Issue 6

Jun. 2023

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JI Haibo, WANG Xin, ZHAO Zhenyu, ZHAO Zhongnan, LI Xue, HAN Jiatong, LU Tianjian. Simulation on penetration of a flat-nosed projectile with attack angle into aramid laminates having varying thickness[J]. Explosion And Shock Waves, 2023, 43(6): 063302. doi: 10.11883/bzycj-2022-0231

Citation:

JI Haibo, WANG Xin, ZHAO Zhenyu, ZHAO Zhongnan, LI Xue, HAN Jiatong, LU Tianjian. Simulation on penetration of a flat-nosed projectile with attack angle into aramid laminates having varying thickness[J]. Explosion And Shock Waves, 2023, 43(6): 063302. doi: 10.11883/bzycj-2022-0231

Citation:

JI Haibo, WANG Xin, ZHAO Zhenyu, ZHAO Zhongnan, LI Xue, HAN Jiatong, LU Tianjian. Simulation on penetration of a flat-nosed projectile with attack angle into aramid laminates having varying thickness[J]. Explosion And Shock Waves, 2023, 43(6): 063302. doi: 10.11883/bzycj-2022-0231

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Simulation on penetration of a flat-nosed projectile with attack angle into aramid laminates having varying thickness

doi: 10.11883/bzycj-2022-0231

JI Haibo^{1, 2
,},
WANG Xin^{3, 4},
ZHAO Zhenyu^{1, 2},
ZHAO Zhongnan⁵,
LI Xue^{1, 2},
HAN Jiatong^{1, 2},
LU Tianjian^{1, 2
,
,}

1.
State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, Jiangsu, China
2.
MIIT Key Laboratory of Multifunctional Lightweight Materials and Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, Jiangsu, China
3.
State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China
4.
Impact Mechanics Laboratory, National University of Singapore, Singapore 117575, Singapore
5.
Northwest Institute of Nuclear Technology, Xi’an 710024, Shaanxi, China

Received Date: 2022-05-30
Rev Recd Date: 2022-07-08

Available Online: 2022-09-13

Publish Date: 2023-06-05

Abstract

Abstract

A three-dimensional finite element (FE) model was developed to quantify the effect of attack angle on the penetration resistance of aramid laminates having varying thickness against flat-nosed projectile. The model was created through a macroscopic approach, which did not take into account the internal microscopic structure of the laminate and macroscopically equated each laminate as a homogeneous orthotropic anisotropic material. The validity of FE simulation results was compared with existing experimental data, with good agreement achieved in terms of residual velocities of the project and damage patterns of the aramid laminates. The validated FE model was subsequently employed to simulate the ballistic responses of 4, 8 and 16 mm target plates in the range of 0°～30° attack angle. The residual velocity of the projectile, energy absorption rate of target, ballistic limit, and perforation energy threshold were calculated to characterize the ballistic performance of aramid laminates. By comparing the damage patterns of the aramid laminates and the contact forces applied to the project under different conditions, the mechanical mechanism by which the attack angle affected the ballistic performance of the aramid laminates at different impact velocities and different target thicknesses was explained. Within the studied working conditions, obtained results revealed that: the attack angle affects significantly the ballistic performance of aramid laminates, depending upon projectile impact velocity and target thickness; the ballistic limit and perforation energy threshold decrease with increasing attack angle, and the degree of such decrease is reduced as target thickness is increased; the residual velocity of projectile increases with increasing attack angle when the impact velocity is close to the ballistic limit and decreases with increasing attack angle when the velocity is well above the ballistic limit; the influencing mechanism of attack angle on ballistic performance varies with the damage pattern of aramid laminates.
- attack angle,
- aramid laminate,
- flat-nosed projectile,
- ballistic limit velocity,
- perforation energy threshold

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References(50)

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