Page 180 - 《爆炸与冲击》2026年第9期

第 46 卷 杨石刚，等： 柱形装药接触爆炸作用下钢纤维混凝土靶成坑效应预测模型 第 9 期

e
H 随有效装药量 Q 变化的预测模型，主要研究结论如下。
(1) 采用 SPG-S-ALE 法重现了接触爆炸下 SFRC 靶体的爆炸毁伤过程，模拟得到的爆坑尺寸与试验
结果的相对误差在 10% 以内，验证了该数值方法的有效性与准确性。
(2) 装药量和长径比对 SFRC 靶体破坏模式具有显著影响。当 Q≤11 kg，l/d 的取值范围为 1～5 时，
SFRC 靶体主要呈爆炸成坑破坏。不同装药量情况下，当 l/d 由 1 增大至 5 时，D 和 H 均减小了约 50%。
√ √
(3) 当 Q ≤16 kg 1 K 2 随 e K 1 = 0.366Q −1.13 K 2 = 101.28Q −0.43 。D 和 H 与
e 时，K 与 Q 呈幂函数衰减： e ， e
Q 之间服从幂函数增长关系。
e
(4) 在 Q 相同条件下，相较于爆坑深度 H，SFRC 靶的成坑效应更集中于爆坑直径 D 的扩展。
e
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