Numerical simulation on truncated oval-nosed projectile penetrating into stiffened plate

Benting ZHU; Guomin WU

doi:10.19693/j.issn.1673-3185.02460

Journals >Chinese Journal of Ship Research >Volume 17 >Issue 6 >Page 244 > Article

Chinese Journal of Ship Research
Vol. 17, Issue 6, 244 (2022)

Numerical simulation on truncated oval-nosed projectile penetrating into stiffened plate

Benting ZHU and Guomin WU

Author Affiliations

China Ship Development and Design Center, Wuhan 430064, China

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DOI: 10.19693/j.issn.1673-3185.02460 Cite this Article

Benting ZHU, Guomin WU. Numerical simulation on truncated oval-nosed projectile penetrating into stiffened plate[J]. Chinese Journal of Ship Research, 2022, 17(6): 244 Copy Citation Text

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模型参数	921A材料	35CrMnSiNi2A材料
密度$ \rho /(\mathrm{k}\mathrm{g}\cdot {\mathrm{m}}^{-3}) $	7800	7850
杨氏模量$ E/\mathrm{G}\mathrm{P}\mathrm{a} $	206	210
泊松比	0.28	0.28
$ {T}_{\mathrm{r}}/\mathrm{K} $	298	－
$ {T}_{\mathrm{m}}/\mathrm{K} $	1763.5	－
A/MPa	685	－
B/MPa	810.32	－
n	0.782	－
c	0.048 3	－
mt	1.05	－

Table 1. Material parameters

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工况	靶板形式	着弹点(姿态)/mm	初始速度/(m·s⁻¹)	剩余速度(仿真值)/(m·s⁻¹)	剩余速度(实验值)/(m·s⁻¹)	偏差e /%	弹孔孔径/mm
1	均质板	（垂向）	607.0	580.5	584.9	0.75	112
2	加筋板	距垂向筋0，距水平筋31（垂向）	617.7	563.9	574.9	1.9	112

Table 2. Comparison of numerical and experimental results

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初始速度/(m·s⁻¹)	剩余速度/(m·s⁻¹)	能量损失/kJ	面板变形能/kJ	板变形能占比/％	垂向筋变形能/kJ	垂向筋变形能占比/％	水平筋变形能/kJ	水平筋变形能占比/％
300.0	204.3	379.1	147.0	38.8	72.4	19.1	25.4	6.7
400.0	329.2	408.9	127.3	31.1	80.0	19.6	23.2	5.7
500.0	438.9	455.8	126.2	27.7	80.2	17.6	21.7	4.8
617.7	563.9	508.9	120.5	23.7	75.9	14.9	17.5	3.4
700.0	648.8	552.0	113.4	20.5	74.6	14.3	15.6	2.8
800.0	751.7	600.7	106.9	17.8	70.5	11.7	13.6	2.2
900.0	850.9	685.0	98.1	14.3	67.3	9.8	12.2	1.8

Table 3. Energy absorption of each part of stiffened plate at different initial velocities

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着弹点偏移距离/mm	最大偏转角度/(°)	最大偏转角飞行距离/mm	侵彻后角速度/((°)·s⁻¹)	3 m后偏转角度（预测值）/(°)
2	1.18	367.21	−2 994.84	−13.08
5	2.99	389.71	−3 931.76	−15.69
7	3.84	390.42	−3 791.18	−14.12
10	4.96	391.40	−2 730.89	−7.94
20	6.14	373.33	−6 510.17	−24.57
30	4.93	376.04	−5 808.89	−22.25
40	3.34	355.79	−4 658.91	−18.32
50	2.06	357.70	−1 945.1	−6.76

Table 4. Influence of rectangular stiffeners on projectile trajectory

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着弹点偏移距离/mm	最大偏转角度/(°)	最大偏转角飞行距离/mm	侵彻后角速度/((°)·s⁻¹)	3 m后偏转角度(预测值)/(°)
2	2.03	379.71	−3 583.53	−14.73
5	4.90	402.15	−2 859.96	−9.14
7	6.40	403.03	−1 812.54	−2.47
10	8.82	446.88	10.01	8.86
20	9.51	389.18	−7 850.11	−28.47
30	8.10	372.33	−7 066.97	−25.54
40	5.84	375.63	−5 660.71	−20.84
50	3.69	355.83	−4 206.98	−15.91

Table 5. Influence of T-stiffeners on missile flight trajectory

Benting ZHU, Guomin WU. Numerical simulation on truncated oval-nosed projectile penetrating into stiffened plate[J]. Chinese Journal of Ship Research, 2022, 17(6): 244

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