Shock propagation in a target subjected to hypervelocity impact of an incident projectile

A hydrodynamic model, based on shock diffraction theory and the q u a s i -s i m i l a r i t y solutions of blast wave theory, i s developed t o d e s c r i b e the shock profile h i s t o r y in a m e t a l t a r g e t on which a hypervelocity m e t a l projectile impacts.A finite difference integration of the resultant method of c h a r a c t e r i s t i c solution i s used to obtain n u m e r i c a l r e s u l t s .A n u m e r i c a l example of aluminum impacting on aluminum at a velocity of 20 k m / s e c i s presented.The comparison with the d i r e c t n u m e r i c a l r e s u l t s shows a good agreement f o r the c a s e selected.