A New Mathematical Model for the Penetration of Segmented Rod into Ceramic Semi-Infinite Target

In this paper by analyzing the penetration mechanics of the segmented rods into semi-infinite ceramic targets, a mathematical model is provided to predict segmented rod projectiles penetration into semi-infinite ceramic targets. In analysis three factors of segments length, segments distance and number of segments are considered. Results suggest that the most important factor in penetration depth is impact velocity. Against the penetration mechanics of long rod projectiles, there is no hydrodynamic limit. In addition ideal shapes for segments is a disk-like shape. Disk-like shape as ideal shape for segments shows the important role of “after flow phase” in segmented rod penetration mechanics. After making sure of accuracy of the simulation results, a mathematical model based on Response Surface method (RSM) is proposed. This paper can generate a suite base to study penetration of segmented rod into targets with complex structures.