Application of cavity expansion analysis to penetration problems

摘要: Abstract : Cavity Expansion Analysis (CEA) is extended in three different areas: (a) analysis of ductile targets accounting for finite boundaries and ductility; (b) brittle ceramics considering the cracking comminution behavior; (c) development a new penetration model metals to overcome limitations existing models. CEA modified account boundary incorporate effects ductility metallic targets, which develop tensile cracks. The results analyses are shown be good agreement with test data. A constitutive behavior based on current understanding used derive quasi-static dynamic cavity expansion pressures. Important material parameters that affect resistance identified. pressure derived this excellent experimental values. models do not always agree eroding rod projectiles at velocities. approach hypothesized targets. In addition elastic plastic zones, 'damaged zone' zone recognized target. comparison models, shows superior data, both low high