Page 184 - 《爆炸与冲击》2026年第5期

第 46 卷 韩思豪，等： 机器学习驱动的折纸超材料夹芯结构低速冲击响应预测及多目标优化 第 5 期

20 25

α=20°, β=30°, θ=20°
Experiment
α=20°, β=20°, θ=20° 20 E t
15 Experiment
Reentrant honeycomb
Experiment 15 E e
Star-shaped honeycomb
Force/kN 10 Ω 1 Experiment Internal energy/J 10
Ω 2
5 α=20°, β=30°, θ=20°
5 α=20°, β=20°, θ=20° E a
Reentrant honeycomb
Ω 3
Star-shaped honeycomb
0 Ω 0 1 2 3 4 5 0 1 2 3 4 5
Time/ms Time/ms
(a) Comparison of force-time curves (b) Comparison of energy-time curves

α=20°, β=30°, θ=20° α=20°, β=20°, θ=20°

Reentrant honeycomb Star-shaped honeycomb
(c) Corresponding topologies

图 3 超材料夹芯复合结构的低速冲击响应
Fig. 3 Comparison of low-velocity impact response of metamaterial sandwiches

Ω 0

Impact Buckling Ω 1 Fracture

Ω 2 Crack growth
Complete break

Experiment x-y plane Ω 3 y-z plane
(a) Failure modes of the corresponding key points in Fig. 3(a)

Reentrant honeycomb Complete break

Star-shaped honeycomb
(b) Failure modes of conventional honeycomb metamaterial sandwiches

图 4 超材料夹芯复合结构的失效破坏模式对比
Fig. 4 Comparison of failure modes of metamaterial sandwiches

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