Penetration of a rod into a semi-infinite target

✍ Scribed by William A. Allen; James W. Rogers

• Publisher: Elsevier Science
• Year: 1961
• Tongue: English
• Weight: 460 KB
• Volume: 272
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/0016-0032(61)90559-2

✦ Synopsis

The penetration of metal rods into semi-infinite metal targets has been investigated experimentally at velocities up to 0.3 cm//zsec. The rods were composed of Au, Pb, Cu, Sn, A1, and Mg ; the targets were aluminum. Results are compared with predictions from the hydrodynamic theory of jet penetration. Basic assumptions of the hydrodynamic theory were used to determine an effective yield strength of the target-rod combination. Experimental results indicate that the effective yield strength is relatively independent of the strength of the rod. The hydrodynamic theory of penetration was determined to be generally acceptable except where the density of the jet is much greater than that of the target. A gold jet reveals a new effect of secondary penetration which results in penetration greater than that predicted by theory.