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ZHANG Jun, JIA Guangchen, XU Guojun. Effect of warhead shape on penetration into metal-ceramic lattice sandwich structure[J]. Journal of Aerospace Power, 2020, 35(1): 1-8. doi: 10.13224/j.cnki.jasp.2020.01.001
Citation: ZHANG Jun, JIA Guangchen, XU Guojun. Effect of warhead shape on penetration into metal-ceramic lattice sandwich structure[J]. Journal of Aerospace Power, 2020, 35(1): 1-8. doi: 10.13224/j.cnki.jasp.2020.01.001
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Effect of warhead shape on penetration into metal-ceramic lattice sandwich structure

doi: 10.13224/j.cnki.jasp.2020.01.001

  • College of Engineering Science and Technology,Shanghai Ocean University,Shanghai 201306,China

  • Received Date: 2019-08-07
  • Publish Date: 2020-01-28
    Abstract
  • A structural model of composite materials composed of the metal skeleton,ceramic rods, epoxy, front and back metal plates was proposed. Based on the finite element method, the validity of numerical method was proved by the available experiments. Then, anti-penetration mechanisms of the composite structures were simulated in the process of penetration with three types of steel projectiles (flat-warhead, hemispherical-warhead and conical-warhead). The sub-structures failure modes, energy absorption efficiency, plastic deformation, ballistic performances, velocities and accelerations of the projectiles target plate were analyzed. The results showed that the warhead shape had a great effect on the damage mechanisms and energy absorption characteristics. The flat-warhead and hemispherical-warhead projectiles mainly resulted in crushing damage to the target plate, and the peak acceleration time was shorter. However, the conical-warhead projectile penetration into the target plate mainly resulted in piercing and reaming. The peak acceleration time was greater and the penetration efficiency was the highest. During the projectile penetration, the shear hole and plastic deformation of the metal skeleton, the fracture of the ceramic rod and the plastic deformation of the metal front plate and the metal back plate significantly improved the anti-penetration ability of the structure.

     

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