Abstract

Natural fragmentation of steel cylinders with different charge sizes is investigated, and the correlation of different cylinders is proposed. The Mott fragment distribution has some obvious shortcomings, including the difficulty of accurately determining the number of fragments. Besides, there is no unified and convenient method to describe the fragmentation behavior of shells with different structures. The results show that the fragmentation behavior of the cylinder is self-similar statistically and can be characterized by a new integrated linear formula \(C_L = a + b (C / M)\). Due to the existence of the end face and the charge clearance, the fragmentation performance of the cylinder is reduced to a constant value, and the effect of the wall thickness is small. The influence of the end face and charge clearance on fragmentation is investigated by 3D simulations, and the numerical results ensure good validation of the experimental data.

中文翻译：

---

爆炸载荷下具有可变装药几何形状的钢瓶的自然破碎行为

摘要

研究了不同装药量的钢瓶的自然破碎，并提出了不同钢瓶的相关性。莫特片段分布具有一些明显的缺点，包括难以准确确定片段数量。此外，还没有统一，方便的方法来描述具有不同结构的壳的碎裂行为。结果表明，圆柱体的破碎行为在统计上是自相似的，并且可以通过新的积分线性公式\（C_L = a + b（C / M）\）来表征。 。由于端面和电荷间隙的存在，圆柱体的破碎性能降低到一个恒定值，并且壁厚的影响很小。通过3D模拟研究了端面和电荷清除对碎片的影响，数值结果确保了实验数据的良好验证。