FRAGMENTATION OF KE RODS DURING PERFORATION OF SINGLE RHA PLATES OVER A LARGE THICKNESS RANGE OF 3-125 MM
The fragmentation of penetrator and target materials found in experiments with L/D=6 tungsten sinter alloy rods against RHA targets of thicknesses T=3125 mm corresponding to T/D ratios of 0.15 to 6.25 is modeled with empirical formulae. For calculation of the eroded penetrator mass, the empirical perforation formula given by Jeanquartier and Odermatt has been applied. Good agreement between test data and model description is found in the lower thickness range, whereas deviations of up to 16 percent are observed for T/D > 1.25. By means of an equation by Steinberg, a maximum strain rate of 112253 s-1 was estimated for tungsten. With the analytic model of Kipp and Grady and empirical linear equations, good agreement was attainable for average size and amount of the penetrator and small-size target fragments from experiments if an approximate strain rate of 100000 s-1 is assumed for penetrator and target materials.
Karl Weber
Fraunhofer Institute for High-Speed Dynamics, Ernst-Mach-Institut (EMI), Eckerstrasse 4, 79104 Freiburg i. Br. Germany
国际会议
25th International Symposium on Ballistics(第25届国际弹道会议)
北京
英文
1322-1330
2010-05-17（万方平台首次上网日期，不代表论文的发表时间）