Numerical calculation of coupled damage effects on ship subjected to internal blast loading of warhead

Table 1. Dimensions of the cased charge
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Table 1. Dimensions of the cased charge
TNT装药铝壳
质量/g 高度/mm 直径/mm 质量/g 内部高度/mm 内部直径/mm 壁厚/mm
149.0 48.2 50.4 110.4 48.5 50.5 6.0

Table 2. Parameters of Steinberg-Guinan constitutive model

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Table 2. Parameters of Steinberg-Guinan constitutive model

参数	数值
初始剪切模量/ kPa	2.76×10⁷
初始屈服应力/ kPa	2.9×10⁵
最大屈服应力/ kPa	6.8×10⁵
硬化常数	125
硬化指数	0.1
dG/dp	1.8
dG/dT/(kPa·K⁻¹)	−1.7×10⁴
dY/dp	0.018 9
熔化温度/ K	9.3×10²

Table 3. Parameters of JWL state equation for the charge
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Table 3. Parameters of JWL state equation for the charge
参数数值
密度/(g·m⁻³) 1.55
A/ GPa 373.77
B/ GPa 3.7471
r₁ 4.15
r₂ 0.9
ω 0.35
e/(GJ·m⁻³) 5.235

Table 4. Velocities obtained from measuring points #6−#21

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Table 4. Velocities obtained from measuring points #6−#21

测点	速度/(m·s⁻¹)		飞散时间/ms	y方向位移/mm
测点	x方向	y方向	飞散时间/ms	y方向位移/mm
#6	1358.890	−190.590	0.662	−126
#7	1355.220	−189.935	0.664	−126
#8	1493.790	−80.714	0.602	−49
#9	1493.730	−82.780	0.603	−50
#10	1499.750	−86.297	0.600	−52
#11	1507.250	−86.303	0.597	−52
#12	1515.650	−86.783	0.594	−52
#13	1523.090	−84.640	0.591	−50
#14	1526.200	−84.084	0.590	−50
#15	1528.480	−83.297	0.589	−49
#16	1530.390	−82.931	0.588	−49
#17	1469.260	−77.285	0.613	−47
#18	1376.390	−56.102	0.654	−37
#19	1378.350	−54.386	0.653	−36
#20	1280.990	124.036	0.703	87
#21	1171.680	170.980	0.768	131

Table 5. Parameters of equivalent bare charge in numerical simulation
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Table 5. Parameters of equivalent bare charge in numerical simulation
参数数值
实际装药量/g 149.0
炸药初始能量/J 5.66×10⁵
破片总能量/J 2.96×10⁵
冲击波能量/J 2.70×10⁵
等效裸装药量/g 71.5

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Hu ZHOU, Xuesen YUE, Xiangshao KONG, Cheng ZHENG, Weiguo WU. Numerical calculation of coupled damage effects on ship subjected to internal blast loading of warhead[J]. Chinese Journal of Ship Research, 2022, 17(5): 241

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