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为研究温度的升高和相变的出现对材料在超高速碰撞中行为的影响,采用考虑温度和相变效应的GRAY三相物态方程与未考虑相关效应的Tillotson物态方程,对超高速碰撞碎片云的质量特性进行数值模拟对比研究。结果表明:当碰撞速度在5 km/s以下时,由两种物态方程给出的碎片云质量数据基本一致,但当碰撞速度在7 km/s及以上时,两种物态方程给出碎片云质量数据有较大差别;而在碰撞速度为7、8 km/s,两种物态方程给出的前向碎片云质量随方位角α的分布有明显区别。这说明在较高速度的碰撞中,温度和相变的相关效应对碎片云运动及其后续破坏能力有较大影响。
In order to study the effect of temperature rise and phase change on the behavior of materials in hypervelocity impact, the three-phase GRAY three-phase equation of state and the Tillotson equation of state without considering the correlation effect were used to simulate the superhigh speed Contrasting research on the quality characteristics of collision debris cloud by numerical simulation. The results show that when the collision velocity is under 5 km / s, the mass data of debris cloud given by two kinds of matter equations are basically the same, but when the collision velocity is 7 km / s and above, two kinds of matter equations are given However, at the collision velocity of 7,8 km / s, the forward fragment cloud quality given by the two kinds of state equations is obviously different with the distribution of azimuth angle α. This shows that in higher-speed collisions, the related effects of temperature and phase transition have a greater impact on the debris cloud movement and its subsequent destructive capacity.