Abstract The shock response of aluminum powder/rubber matrix composites containing 40, 50, and 60 vol% Al was investigated using the plate impact test and explosive loading technique. The shock stress in the range of 0.61–13.97 GPa was measured and the free surface velocity of the specimen was monitored using the displacement interferometer system for any reflector. The composites' shock Hugoniots were obtained in terms of shock velocity, particle velocity, and shock stress, and a theoretical model for predicting the Hugoniots of the composites was proposed. The results revealed that a steady shock front was generated and propagated in the composites. The shock stress was attenuated with the propagation distance and the attenuation effect became more obvious as the stress increased. The shock velocity had a linear relationship with the particle velocity and the relationships for the composites with 40 and 50 vol% Al were very similar. By comparing the Hugoniots of the three materials and rubber, it was found that the shock behavior of the composites was similar to that of the matrix rubber. Additionally, the rubbery type shock response changed as the aluminum content increased. The shock behavior of the composites was adequately described by the proposed theoretical model.

中文翻译：

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铝粉/橡胶基复合材料冲击响应及状态方程预测模型

摘要 采用板式冲击试验和爆炸加载技术研究了含 40、50 和 60 vol% Al 的铝粉/橡胶基复合材料的冲击响应。测量了 0.61-13.97 GPa 范围内的冲击应力，并使用位移干涉仪系统对任何反射器监测样品的自由表面速度。从冲击速度、粒子速度和冲击应力等方面获得了复合材料的冲击雨果，并提出了预测复合材料雨果的理论模型。结果表明，在复合材料中产生并传播了稳定的激波前沿。冲击应力随着传播距离的增加而衰减，并且随着应力的增加衰减效果更加明显。冲击速度与粒子速度呈线性关系，含 40 和 50 vol% Al 的复合材料的关系非常相似。通过比较三种材料和橡胶的 Hugoniot，发现复合材料的冲击行为与基体橡胶相似。此外，随着铝含量的增加，橡胶型冲击响应发生了变化。所提出的理论模型充分描述了复合材料的冲击行为。