Numerical Simulations of Impact Behaviour of Thin Steel Plates Subjected to Cylindrical, Conical and Hemispherical Non-Deformable Projectiles Articles uri icon

publication date

  • April 2008

start page

  • 1635

end page

  • 1656

issue

  • 6

volume

  • 75

International Standard Serial Number (ISSN)

  • 0013-7944

Electronic International Standard Serial Number (EISSN)

  • 1873-7315

abstract

  • In this paper, a numerical study of normal perforation of thin steel plates impacted by different projectile shapes is reported. The numerical simulations of this problem have been performed using a finite element code, ABAQUS-Explicit with a fixed and an adaptive mesh for the plate. To define the thermoviscoplastic behaviour of the material constituting the plate, the Johnson&-Cook model has been used. This homogeneous behaviour has been coupled with the Johnson&-Cook fracture criterion to predict completely the perforation process. Three kinds of projectile shape (blunt, conical and hemispherical) have been simulated with a large range of impact velocities from 190 to 600 m/s. The analysis considers the influence of adiabatic shear bands, plastic work and the gradient of temperature generated in the plate. The numerical results predict correctly the behaviour projectile-plate in agreement with experimental data published by other authors.