Mechanical behavior of marine aluminum alloy sheet under low-speed impact resistance

Table 1. Test conditions
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Table 1. Test conditions
试板编号冲击质量/kg 冲击速度/（m∙s⁻¹）冲击能量/J
1 100 2.68 359
2 100 2.17 235
3 100 2.05 210
4 100 1.80 162
5 89 2.30 235
6 89 2.08 192

Table 2. Comparison of experimental and numerical results

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Table 2. Comparison of experimental and numerical results

试板编号	峰值力/kN		偏差/%	最大位移/mm		偏差/%	临界破坏能量/J		偏差/%
试板编号	试验	仿真	偏差/%	试验	仿真	偏差/%	试验	仿真	偏差/%
1	32.96	31.88	3.28	14.78	14.65	0.88	208	205	–1.93
2	30.52	32.03	−4.95	14.39	14.78	−2.71	188	203	7.97
3	34.31	32.18	6.21	14.03	14.61	−4.13	198	199	3.16
4	32.10	28.40	11.53	13.58	13.76	−1.33	−	−	−
5	30.36	31.99	−5.37	14.39	14.96	−3.96	199	204	2.45
6	29.77	30.11	−1.14	13.47	14.03	−4.16	−	−	−

Table 3. Effect of the ratio of the test plate on the critical failure energy

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Table 3. Effect of the ratio of the test plate on the critical failure energy

工况	试板长度/mm	试板宽度/mm	长宽比	最大撞击力/kN	临界破坏能量/J
A1	100	100	1	32.40	163
A2	150	100	1.5	32.24	167
A3	200	100	2	32.25	167
A4	250	100	2.5	32.43	167
A5	300	100	3	32.33	168
A6	350	100	3.5	32.36	168
A7	400	100	4	32.46	168

Table 4. Effect of impact position on critical failure energy
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Table 4. Effect of impact position on critical failure energy
工况 a b 临界破坏能量/J
B1 150 150 158
B2 150 100 168
B3 150 50 176
B4 150 0 182
B5 100 100 192
B6 100 50 216
B7 100 0 224
B8 50 50 218
B9 50 0 228
B10 0 0 234

Table 5. Calculation conditions for different shapes of impactor
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Table 5. Calculation conditions for different shapes of impactor
工况撞头形状撞头尺寸/mm 冲击能量/J 临界破坏能量/J
C1 截型 10.00（边长） 359 205
C2 立方体 10.00（边长） 359 214
C3 圆柱体 11.28（直径） 359 215

Table 6. The influence of different factors on the critical failure energy

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Table 6. The influence of different factors on the critical failure energy

工况	直径/mm	正方形试板边长/mm	临界破坏能量/J	偏差/%
D1	11.28	400	234	1.060
D2	11.28	350	217	4.880
D3	11.28	300	205	6.210
D4	11.28	250	197	4.890
D5	11.28	200	186	4.210
D6	11.28	150	173	3.170
D7	11.28	100	163	–2.480
D8	10.15	400	213	2.440
D9	12.41	400	251	1.330
D10	13.54	400	262	3.740
D11	14.66	400	289	–0.068

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Shuangxi XU, Haokun ZHANG, Wei SHEN, Wei LUO, Wei DONG, Yanhui ZHANG. Mechanical behavior of marine aluminum alloy sheet under low-speed impact resistance[J]. Chinese Journal of Ship Research, 2025, 20(3): 148

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