Plate perforation by deformable projectiles — A plastic wave theory

Abstract A one-dimensional wave propagation model of plate perforation is developed for cylindrical projectiles impacting plates at normal obliquity. This theory assumes that the projectile and plate materials are rigid-linearly strain-hardening and rigid-perfectly plastic respectively, with respect to engineering stress and strain. During penetration, the projectile deforms and a plug forms in the plate. The plug which is sheared from the plate is larger than the initial cross-section of the projectile. Residual velocity, plug mass and final plug thickness are determined for this model and compared with experiments on ductile metal plates impacted at velocities larger than the minimum perforation velocity.

[1]  T. W. Ipson,et al.  Ballistic Perforation Dynamics , 1963 .

[2]  Geoffrey Ingram Taylor,et al.  The use of flat-ended projectiles for determining dynamic yield stress I. Theoretical considerations , 1948, Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences.

[3]  S. R. Bodner,et al.  Analysis of the mechanics of perforation of projectiles in metallic plates , 1974 .

[4]  R. Woodward.  Penetration of semi-infinite metal targets by deforming projectiles , 1982 .

[5]  Rodney F. Recht,et al.  Taylor ballistic impact modelling applied to deformation and mass loss determinations , 1978 .

[6]  R. L. Woodward,et al.  Penetration of targets by flat-ended projectiles , 1976 .

[7]  S. R. Bodner,et al.  Experimental Investigation of Normal Perforation of Projectiles in Metallic Plates , 1974 .

[8]  Werner Golsdmith,et al.  Penetration and perforation processes in metal targets at and above ballistic velocities , 1971 .

[9]  James M. Kelly,et al.  A phenomenological penetration model of plates , 1983 .

[10]  Werner Goldsmith,et al.  Constraint to Side Flow in Plates , 1983 .

[11]  Jien Nishiwaki,et al.  Resistance to the Penetration of a Bullet through an Aluminium Plate , 1951 .

[12]  Jonathan Awerbuch,et al.  A Mechanics Approach to Projectile Penetration , 1970 .

[13]  Werner Goldsmith,et al.  The mechanics of penetration of projectiles into targets , 1978 .

[14]  Pei Chi Chou,et al.  Dynamic Response of Materials to Intense Impulsive Loading , 1972 .