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Results indicate that the damage in the target plate comprises of cratering and spallation. The equivalent plastic strain (PEEQ) decreases in the crater region with increasing β , resulting in smaller crater diameter and crater depth as shown in the Figure 1. However, the spall diam eter increases with higher β values. Mass loss decreases in the crater region but increases in the spall region as β increases. This parametric study shows that increasing the β value can enhance the cratering resistance of the target plate under hypervelocity impact but may diminish the spall resistance, highlighting the importance of considering pressure sensitivity in such HVI simulations.

Keywords: Financial support from IITB-ISRO Space Technology Cell through a sponsored project with code RD/0119-ISROC00-010 is thankfully acknowledged.

References [1] Manual, A. U. (2020). Abaqus user manual, ABAQUS. [2] SYSTEMES, D. (2012). Simulation of the Ballistic Perforation of Aluminum Plates with Abaqus/Explicit, Abaqus Technology Brief. DASSAULT SYSTEMES, Waltham, MA.

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