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Numerical simulation of normal and oblique ballistic impact on ceramic composite armours

机译：法向和斜向弹道对陶瓷复合装甲冲击的数值模拟

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This paper presents three-dimensional finite element models that investigate the performance of ceramic-composite armours when subjected to normal and oblique impacts by 7.62 AP rounds. The finite element results are compared with experimental data from different sources both for normal and oblique impact, respectively. Simulation of the penetration processes as well as the evaluation of energy and stresses distributions within the impact zones highlight the difference between normal and oblique ballistic impact phenomena. The findings show that the distributions of global kinetic, internal and total energy versus time are similar for normal and oblique impact. However, the interlaminar stresses at the ceramic-composite interface and the forces at the projectile-ceramic interface for oblique impact are found to be smaller than those for normal impact. Finally, it is observed that the projectile erosion in oblique impact is slightly greater than that in normal impact.
机译：本文提出了三维有限元模型，用于研究陶瓷复合材料装甲在受到7.62个AP弹的正向和倾斜冲击时的性能。分别将有限元结果与来自不同来源的正常和倾斜冲击的实验数据进行比较。穿透过程的模拟以及冲击区域内能量和应力分布的评估突出了正常和倾斜弹道冲击现象之间的差异。研究结果表明，对于正常和倾斜冲击，整体动能，内部和总能量随时间的分布相似。但是，发现在陶瓷复合界面处的层间应力和在弹丸-陶瓷界面处的斜向冲击力要小于普通冲击时的力。最后，观察到倾斜冲击下的弹丸侵蚀略大于正常冲击下的弹丸侵蚀。

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