Investigation of hypervelocity impact behavior of projectile on metal plates

Abstract

iii newlineABSTRACT newlineHypervelocity impact and protection play a critical role in aerospace and planetary newlinedefense. One prominent application of hypervelocity impact is protecting spacecraft newlinefrom space debris. In recent years, meteoroids and orbital debris (MOD) have emerged newlineas significant threats to spacecraft. newlineThis study employs finite element analysis to evaluate the impact performance of newlinemonolithic and double-layered plates subjected to cylindrical and spherical projectiles. newlineThe simulations were conducted using dynamic temperature-displacement explicit newlineanalysis in the commercial finite element software ABAQUS. Plates with varying newlinethicknesses (6 mm, 10 mm, and 12 mm) were analyzed, and their responses were newlinecompared under identical projectile configurations. The Johnson-Cook (JC) newlineconstitutive strength and damage model characterized the material behavior of the newlinetarget and projectile, while the Mie-Grüneisen equation of state described material newlineresponses under high-pressure conditions. The monolithic plate exhibited 2.42% higher newlineimpact resistance than the double-layered plate for cylindrical projectiles. Conversely, newlinedouble-layered plates showed 3.63% greater ballistic resistance than monolithic plates newlinefor spherical projectiles. For spherical projectiles, the impact resistance of plates with newlinethicknesses of 6 mm, 10 mm, and 12 mm was 15%, 30%, and 37.75% greater, newlinerespectively, than that of cylindrical projectiles. For cylindrical projectiles, impact newlineresistance increased by 1.89%, 4.73%, and 18.34% at incidence angles of 15°, 30°, and newline45°, respectively, compared to normal impact. For spherical projectiles, impact newlineresistance increased by 1.81%, 8.63%, and 15.45% at incidence angles of 15°, 30°, and newline45°, respectively, compared to normal impact. Additionally, debris cloud morphology newlinevaried based on projectile shape: A bulge formed at the leading edge of the debris cloud newlinefor spherical projectiles. An outer cone developed at the leading edge of the debris cloud newlinefor cylindrical projectiles. newlineThese findings provide valuable insights