Abstract We propose a theoretical interpretation of penetration data, based on partition mechanisms of the impact kinetic energy for different projectile/target combinations of metals and related alloys of interest in terminal ballistics. It is shown how the regime between the upper bound of high-velocity impact, where material strength and failure are still dominating, and the threshold of purely hydrodynamic behavior is characterized by the progressive phase transformations of projectile and target materials. Thermodynamics, impedance matching, and shock dynamics considerations allow quantifying such velocity boundaries for arbitrary impact configurations. We believe that the identification of such transition regime would support the choice of techniques and strategies in the computational modeling of metals upon impact and guide related experiments and their interpretation in such domains for ballistic applications.

中文翻译：

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高速和超高速撞击之间过渡区的表征：金属中的热效应和能量分配

摘要 我们提出了对穿透数据的理论解释，基于不同弹丸/目标组合的金属和终端弹道中感兴趣的相关合金的冲击动能的分配机制。它显示了高速冲击的上限（材料强度和破坏仍然占主导地位）与纯流体动力学行为的阈值之间的状态如何以弹丸和目标材料的渐进相变为特征。热力学、阻抗匹配和冲击动力学考虑允许量化任意冲击配置的此类速度边界。