Page 198 - 《爆炸与冲击》2026年第3期

第 46 卷 廖祜明，等： 预测不同冲击载荷下弹药响应特性的HOTM方法 第 3 期

Central axis

2.0 500 100
λ
1.5 T 80
Measuring p 450
point 1.0 60
400
292 mm λ 0.5 0 350 T/K 40 p/MPa

20
−0.5 300 0

−1.0 250 −20
Bottom 0 50 100 150 200 250 300
Distance from the bottom of the explosive/mm
(a) Measuring point layout (b) Time-history curves of reaction degree, temperature and pressure
图 7 267 μs 时刻炸药沿中轴线反应分布
Fig. 7 Reaction distribution along the central axis of the explosive at 267 μs

σ equiv /MPa λ
500 1.0
0.9
400 0.8
0.7
300 0.6
0.5
200 0.4
0.3
100 0.2
0.1
0 0
Metal case Explosive
(a) Simulated stress distribution (b) Simulated reaction degree distribution (c) Experimental result
图 8 仿真和试验结果对比
Fig. 8 Comparison between simulation and experimental results

4 破片撞击弹药数值仿真

对第 3 节中的弹药开展破片撞击数值仿真分析，几何模型和离散模型如图 9 所示。破片材料采用

4
Metal
case

14.7 1.1 4 292 300
Fragment
12.7 Explosive Node
15.8
Material point
112
Ammunition 120

(a) Geometric configuration (b) Discrete model

图 9 1/4 对称破片撞击计算模型（单位：mm）
Fig. 9 Calculation model with quarter-symmetry for fragment impact (unit: mm)

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