Chinese Journal of Ship Research, Volume. 18, Issue 5, 157(2023)
Strength assessment method of internal-pressure-resistant square cabin based on ASME BPVC
Figures & Tables(13)
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Table 1. Stress classification of ship square cabin withstands internal pressure in different assessment locations
View tableView in ArticleTable 1. Stress classification of ship square cabin withstands internal pressure in different assessment locations
耐内压方舱舱 壁区域 应力校核位置 应力种类 应力类型组合 A级使用应力强度 限制 D级使用应力强 度限制 板格中心 1点 总体薄膜应力 ${P_{\text{m}}}$ $1.0{S_{{\text{mc}}}}$ ${S_{\text{f}}}$ 总体弯曲应力 ${P_{\text{m}}} + {P_{\text{b}}}$ $1.5{S_{{\text{mc}}}}$ ${S_{\text{f}}}$ 板格长边中点、角点、短边中点 2，3，4点 局部薄膜应力 ${P_{\text{L}}}$ $1.5{S_{{\text{mc}}}}$ $1.5{S_{\text{f}}}$ 局部弯曲应力 ${P_{\text{L}}} + Q$ $3.0{S_{{\text{ml}}}}$
Table 2. Calculation results of plates
View tableView in ArticleTable 2. Calculation results of plates
应力校核位置 应力种类 应力类型组合 实体模型计算结果/MPa 板模型 未平均板模型 计算结果/MPa 误差/% 计算结果/MPa 误差/% 板格中点 总体薄膜应力 ${P_{\text{m}}}$ 14.217 540 14.680 150 3.30 14.680 150 3.30 局部弯曲应力 ${P_{\text{m}}} + {P_{\text{b}}}$ 91.065 975 92.082 400 1.12 92.082 400 1.12 板格长边中点 局部薄膜应力 ${P_{\text{L}}}$ 22.584 700 22.475 375 0.49 19.643 400 13.02 局部弯曲应力 ${P_{\text{L}}} + Q$ 94.142 500 107.529 000 14.22 120.433 000 27.93 板格短边中点 局部薄膜应力 ${P_{\text{L}}}$ 24.518 700 26.075 300 6.35 22.228 600 9.34 局部弯曲应力 ${P_{\text{L}}} + Q$ 87.798 600 97.860 000 11.46 102.713 500 16.99 板格角点 局部薄膜应力 ${P_{\text{L}}}$ 58.091 200 62.030 000 6.78 61.065 000 5.12 局部弯曲应力 ${P_{\text{L}}} + Q$ 76.675 800 85.291 000 11.24 86.257 900 12.50
Table 3. Calculation results of beam face plates
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应力校核位置 应力种类 应力类型组合 实体模型计算结果/MPa 板模型 未平均板模型 计算结果/MPa 误差/% 计算结果/MPa 误差/% 板格长边中点 局部薄膜应力 ${P_{\text{L}}}$ 76.821 9 79.047 117 94 2.90 79.099 0 2.96 局部弯曲应力 ${P_{\text{L}}} + Q$ 81.196 5 83.295 167 00 2.58 83.295 0 2.58 板格短边中点 局部薄膜应力 ${P_{\text{L}}}$ 104.794 0 108.262 553 50 3.31 108.263 0 3.31 局部弯曲应力 ${P_{\text{L}}} + Q$ 110.306 0 113.662 846 00 3.04 113.662 8 3.04 板格角点 局部薄膜应力 ${P_{\text{L}}}$ 113.301 0 122.458 490 50 8.08 120.290 0 6.17 局部弯曲应力 ${P_{\text{L}}} + Q$ 134.815 0 154.554 688 80 14.64 156.720 0 16.25
Table 4. Calculation results of beam webs
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应力校核位置 应力种类 应力类型组合 实体模型计算结果/MPa 板模型 未平均板模型 计算结果/MPa 误差/% 计算结果/MPa 误差/% 板格长边中点 局部薄膜应力 ${P_{\text{L}}}$ 33.233 0 33.743 755 85 1.54 33.420 0 0.56 局部弯曲应力 ${P_{\text{L}}} + Q$ 71.515 6 73.560 951 49 2.86 73.910 0 3.35 板格短边中点 局部薄膜应力 ${P_{\text{L}}}$ 45.949 8 46.912 798 36 2.10 46.646 0 1.52 局部弯曲应力 ${P_{\text{L}}} + Q$ 98.286 3 101.435 836 30 3.20 101.700 0 3.47 板格角点 局部薄膜应力 ${P_{\text{L}}}$ 50.761 6 63.270 000 00 24.64 62.175 0 22.48 局部弯曲应力 ${P_{\text{L}}} + Q$ 91.211 0 94.530 000 00 3.64 94.645 8 3.77
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Yiming ZHANG, Yuchao YUAN, Wenyong TANG. Strength assessment method of internal-pressure-resistant square cabin based on ASME BPVC[J]. Chinese Journal of Ship Research, 2023, 18(5): 157
Paper Information
Category: Ship Structure and Fittings
Received: Jul. 4, 2022
Accepted: --
Published Online: Mar. 21, 2025
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