Explosion models based on Finite Element Analysis (FEA) can be used to simulate how a warhead fragments. However their execution times are extensive. Active protection systems need to make very fast predictions, before a fast attacking weapon hits the target. Fast execution times are also needed in real time simulations where the impact of many different computer models is being assessed. Hence, FEA explosion models are not appropriate for these real-time systems. The research presented in this paper delivers a fast simulation model based on Mott’s equation that calculates the number and weight of fragments created by an explosion. In addition, the size and shape of fragments, unavailable in Mott’s equation, are calculated using photographic evidence and a distribution of a fragment’s length to its width. The model also identifies the origin of fragments on the warhead’s casing. The results are verified against experimental data and a fast execution time is achieved using uncomplicated simulation steps. The developed model then can be made available for real-time simulation and fast computation.

基于有限元分析 (FEA) 的爆炸模型可用于模拟弹头碎片的方式。然而，它们的执行时间很长。主动防护系统需要在快速攻击武器击中目标之前做出非常快速的预测。在评估许多不同计算机模型的影响的实时模拟中也需要快速执行时间。因此，FEA 爆炸模型不适用于这些实时系统。本文介绍的研究提供了一个基于莫特方程的快速模拟模型，该模型计算爆炸产生的碎片的数量和重量。此外，莫特方程中无法使用的碎片的大小和形状是使用照片证据和碎片的长度到宽度的分布来计算的。该模型还确定了弹头外壳上碎片的来源。结果根据实验数据进行了验证，并使用简单的模拟步骤实现了快速的执行时间。然后可以使开发的模型可用于实时仿真和快速计算。