Chinese Journal of Ship Research, Volume. 18, Issue 5, 180(2023)
The influence of structural characteristics of stiffened plate on the resistance ability to underwater explosion
Figures & Tables(39)
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Table 1. Material parameters of Q235 steel
View tableView in ArticleTable 1. Material parameters of Q235 steel
密度 ρ/(kg·m−3) 弹性模量 E/GPa 泊松比 μ 屈服应力 σs/MPa 剪切模量 G/MPa 应变率 Dst/s−1 n 7.85×103 210 0.3 235 250 0.3 5
Table 2. Material parameters of the equation of state for water
View tableView in ArticleTable 2. Material parameters of the equation of state for water
密度ρ/(kg·m−3) 声速c0/(m·s−1) 1000 1450
Table 3. Material parameters of the equation of state for air
View tableView in ArticleTable 3. Material parameters of the equation of state for air
密度ρ/(kg·m−3) 环境压力pA/Pa 比热容/(kg·K−1) 1.17 101300 717.4
Table 4. Parameters of JWL equation of state for TNT charge
View tableView in ArticleTable 4. Parameters of JWL equation of state for TNT charge
密度ρ/(kg·m−3) A/GPa B/GPa R1 R2 w 比内能Em/(MJ·m−3) 1.65×103 371.2 3.231 4.15 0.95 0.3 4190
Table 5. Summary of damage area of stiffened plates under different mesh sizes
View tableView in ArticleTable 5. Summary of damage area of stiffened plates under different mesh sizes
网格尺寸/mm 网格数量 破口面积/m2 50 1436 0.083 40 2084 0.091 30 2996 0.095 25 4245 0.096 20 6798 0.097
Table 6. Design conditions
View tableView in ArticleTable 6. Design conditions
工况 A/mm B/道 C/mm D/mm E/道 F/mm G/mm H/mm I/mm 1 0.5 3 0.5 0.5 3 60 0.5 40 2.0 2 1.0 4 1.0 1.0 4 80 1.0 50 2.5 3 2.0 6 2.0 2.0 6 120 2.0 70 3.5 4 2.5 7 2.5 2.5 7 140 2.5 80 4.0
Table 7. Summary of damage to stiffened plates with different panel thicknesses
View tableView in ArticleTable 7. Summary of damage to stiffened plates with different panel thicknesses
工况 t/mm Sd/m2 损伤模式 A-1 0.5 0.352 角隅破损+中间破口 A-2 1.0 0.277 边界撕裂+中间破口 对照组 1.5 0.205 中间破口 A-3 2.0 0.169 中间破口 A-4 2.5 0.107 中间破口
Table 8. Summary of damage to stiffened plates with different numbers of transverse stiffener
View tableView in ArticleTable 8. Summary of damage to stiffened plates with different numbers of transverse stiffener
工况 NX/道 Sd/m2 损伤模式 B-1 3 0.265 中间破口 B-2 4 0.236 中间破口 对照组 5 0.205 中间破口 B-3 6 0.188 板格破口 B-4 7 0.169 板格破口
Table 9. Summary of damage to stiffened plates with different heights of transverse stiffener
View tableView in ArticleTable 9. Summary of damage to stiffened plates with different heights of transverse stiffener
工况 HX/mm Sd/m2 损伤模式 C-1 60 0.277 中间破口 C-2 80 0.249 中间破口 对照组 100 0.205 中间破口 C-3 120 0.195 中间破口 C-4 140 0.188 中间破口
Table 10. Summary of damage to stiffened plates with different web thicknesses of transverse stiffener
View tableView in ArticleTable 10. Summary of damage to stiffened plates with different web thicknesses of transverse stiffener
工况 tX/mm Sd/m2 损伤模式 D-1 0.5 0.272 中间破口 D-2 1.0 0.225 中间破口 对照组 1.5 0.205 中间破口 D-3 2.0 0.184 中间破口 D-4 2.5 0.142 中间破口
Table 11. Summary of damage to stiffened plates with different numbers of stiffener in the transverse and longitudinal directions
View tableView in ArticleTable 11. Summary of damage to stiffened plates with different numbers of stiffener in the transverse and longitudinal directions
工况 NXY/道 Sd/m2 损伤模式 E-1 3 0.370 中间破口+边界破损 E-2 4 0.256 中间破口 对照组 5 0.205 中间破口 E-3 6 0.179 板格破损 E-4 7 0.141 板格破损
Table 12. Summary of damage to stiffened plates with different heights of stiffener in the transverse and longitudinal directions
View tableView in ArticleTable 12. Summary of damage to stiffened plates with different heights of stiffener in the transverse and longitudinal directions
工况 HXY/mm Sd/m2 损伤模式 F-1 60 0.297 中间破口 F-2 80 0.235 中间破口 对照组 100 0.205 中间破口 F-3 120 0.189 中间破口 F-4 140 0.171 中间破口
Table 13. Summary of damage to stiffened plates with different web thicknesses of stiffener in transverse and longitudinal directions
View tableView in ArticleTable 13. Summary of damage to stiffened plates with different web thicknesses of stiffener in transverse and longitudinal directions
工况 tXY/mm Sd/m2 损伤模式 G-1 0.5 0.263 中间破口 G-2 1.0 0.258 中间破口 对照组 1.5 0.205 中间破口 G-3 2.0 0.161 中间破口 G-4 2.5 0.151 中间破口
Table 14. Summary of damage to stiffened plates with different wing widths
View tableView in ArticleTable 14. Summary of damage to stiffened plates with different wing widths
工况 Lp/mm Sd/m2 损伤模式 H-1 40 0.256 中间破口 H-2 50 0.212 中间破口 对照组 60 0.205 中间破口 H-3 70 0.179 中间破口 H-4 80 0.157 中间板格破损
Table 15. Summary of damage to stiffened plates with different wing thicknesses
View tableView in ArticleTable 15. Summary of damage to stiffened plates with different wing thicknesses
工况 tp/mm Sd/m2 损伤模式 I-1 2.0 0.235 中间破口 I-2 2.5 0.212 中间破口 对照组 3.0 0.205 中间破口 I-3 3.5 0.189 中间破口 I-4 4.0 0.152 中间破口
Table 16. Sensitivity coefficients for each structural parameter of stiffened plates
View tableView in ArticleTable 16. Sensitivity coefficients for each structural parameter of stiffened plates
结构参数 敏感度系数αi 横/纵向加强筋高度（工况C） −3.514 10 面板厚度（工况A） −2.771 31 横/纵向加强筋腹板厚度（工况D） −2.600 29 横向和纵向加强筋高度（工况F） −1.977 95 横向和纵向加强筋腹板厚度（工况G） −1.846 79 翼板尺寸（工况H） −1.686 05 横/纵向加强筋数目（工况B） −1.638 41 横向和纵向加强筋数目（工况E） −1.564 23 翼板厚度（工况I） −1.376 93
Table 17. Correlation coefficients calculated by three equivalent methods
View tableView in ArticleTable 17. Correlation coefficients calculated by three equivalent methods
等效方法 相关性系数 面积等效 −0.81 惯性矩等效 −0.62 考虑加强筋系数等效 −0.94
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Han GAO, Zhenwei SONG, Xiangshao KONG, Hu ZHOU, Cheng ZHENG, Weiguo WU. The influence of structural characteristics of stiffened plate on the resistance ability to underwater explosion[J]. Chinese Journal of Ship Research, 2023, 18(5): 180
Paper Information
Category: Ship Structure and Fittings
Received: Sep. 13, 2022
Accepted: --
Published Online: Mar. 21, 2025
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