Chinese Journal of Ship Research, Volume. 18, Issue 6, 216(2023)
Influence of welding residual stress on dynamic and acoustic behavior of typical ship structures
Figures & Tables(23)
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Table 1. Comparison of the natural frequency of the welding plate between experiment and numerical simulation
View tableView in ArticleTable 1. Comparison of the natural frequency of the welding plate between experiment and numerical simulation
模态 阶数 无应力平板固有频率/Hz 误差/% 焊接平板固有频率/Hz 误差/% 实验值 仿真值 实验值 仿真值 1 210.63 210.01 −0.29 170.47 168.35 −1.24 2 241.09 243.74 1.10 204.53 204.38 −0.07 3 493.75 493.49 −0.05 445.00 446.61 0.36 4 495.62 503.23 1.54 507.50 511.53 0.79 5 611.88 616.58 0.77 548.13 553.67 1.01
Table 2. The natural frequency of structure under different welding input powers
View tableView in ArticleTable 2. The natural frequency of structure under different welding input powers
模态 阶数 无应力平板 固有频率/Hz 1.50Q焊接方案 1.25Q焊接方案 1.00Q焊接方案 0.75Q焊接方案 固有频率 /Hz 偏差/% 固有频率 /Hz 偏差/% 固有频率 /Hz 偏差/% 固有频率 /Hz 偏差/% 空气 1 56.24 52.7 −6.30 52.98 −5.79 53.38 −5.09 53.87 −4.22 2 133.13 127.11 −4.52 127.43 −4.28 128.06 −3.81 128.87 −3.20 3 166.39 160.85 −3.33 161.11 −3.17 161.67 −2.84 162.47 −2.36 4 176.61 175.39 −0.69 175.48 −0.64 175.67 −0.53 175.88 −0.41 5 178.36 177.39 −0.54 177.44 −0.52 177.57 −0.44 177.7 −0.37 6 220.63 216.22 −2.00 216.48 −1.88 216.91 −1.69 217.47 −1.43 水 1 41.14 38.54 −6.32 38.75 −5.81 39.04 −5.10 39.4 −4.23 2 96.34 91.54 −4.98 91.8 −4.72 92.29 −4.20 92.92 −3.55 3 117.21 113.21 −3.41 113.41 −3.24 113.82 −2.89 114.39 −2.41 4 138.11 137.91 −0.14 137.92 −0.14 137.98 −0.09 138.03 −0.06 5 146.13 144.93 −0.82 145.02 −0.76 145.2 −0.64 145.4 −0.50 6 169.74 166.4 −1.97 166.6 −1.85 166.93 −1.66 167.35 −1.41
Table 3. Overall acceleration level at monitoring point Ⅰ
View tableView in ArticleTable 3. Overall acceleration level at monitoring point Ⅰ
固有频率 /Hz 总加速度级/dB 无应力 平板 1.50Q 焊接方案 1.25Q 焊接方案 1.00Q 焊接方案 0.75Q 焊接方案 10～250 126.96 127.20 127.42 127.13 126.67 251～500 124.41 126.90 127.00 126.92 126.84 501～750 135.79 135.37 135.36 135.26 135.26 751～1 000 133.29 133.09 133.13 132.87 132.92
Table 4. Overall acceleration level at monitoring point Ⅱ
View tableView in ArticleTable 4. Overall acceleration level at monitoring point Ⅱ
固有频率 /Hz 总加速度级/dB 无应力 平板 1.50Q 焊接方案 1.25Q 焊接方案 1.00Q 焊接方案 0.75Q 焊接方案 10～250 137.29 138.12 138.67 137.68 137.44 251～500 139.90 139.81 139.81 139.87 139.88 501～750 142.31 143.68 143.59 143.47 143.32 751～1 000 143.22 141.93 141.99 142.14 142.29
Table 5. The RMS value of vibration velocity of the plate
View tableView in ArticleTable 5. The RMS value of vibration velocity of the plate
固有频率 /Hz 均方根速度级/dB 无应力 平板 1.50Q 焊接方案 1.25Q 焊接方案 1.00Q 焊接方案 0.75Q 焊接方案 10～500 113.05 113.09 115.33 114.44 111.75 501～1 000 109.55 108.08 108.02 107.97 107.98
Table 6. Overall sound pressure level at monitoring point Ⅲ
View tableView in ArticleTable 6. Overall sound pressure level at monitoring point Ⅲ
频率/Hz 总声压级/dB 无应力 平板 1.50Q 焊接 方案 1.25Q 焊接 方案 1.00Q 焊接 方案 0.75Q 焊接 方案 10～250 141.57 141.54 141.74 141.80 141.72 251～500 148.00 147.93 147.94 147.97 147.98 501～750 152.29 152.50 152.49 152.46 152.44 751～1 000 151.76 151.45 151.47 151.50 151.53
Table 7. The natural frequency of structure under different welding speeds
View tableView in ArticleTable 7. The natural frequency of structure under different welding speeds
模态 阶数 无应力平板 固有频率/dB 0.50Q焊接方案 0.75Q焊接方案 1.00Q焊接方案 1.25Q焊接方案 固有频率 /Hz 偏差/% 固有频率 /Hz 偏差/% 固有频率 /Hz 偏差/% 固有频率 /Hz 偏差/% 空气 1 56.24 52.08 −7.41 53.13 −5.54 53.38 −5.09 53.83 −4.29 2 133.13 125.98 −5.37 127.69 −4.09 128.06 −3.81 128.81 −3.24 3 166.39 159.7 −4.02 161.37 −3.02 161.67 −2.84 162.49 −2.35 4 176.61 175.14 −0.83 175.52 −0.62 175.67 −0.53 175.93 −0.39 5 178.36 177.23 −0.63 177.47 −0.50 177.57 −0.44 177.75 −0.34 6 220.63 215.46 −2.35 216.71 −1.78 216.91 −1.69 217.49 −1.42 水 1 41.14 38.08 −7.43 38.85 −5.56 39.04 −5.10 39.37 −4.30 2 96.34 90.69 −5.87 92.02 −4.49 92.29 −4.20 92.87 −3.61 3 117.21 112.41 −4.09 113.6 −3.08 113.82 −2.89 114.4 −2.40 4 138.11 137.86 −0.18 137.91 −0.14 137.98 −0.09 138.07 −0.03 5 146.13 144.67 −1.00 145.06 −0.73 145.2 −0.64 145.44 −0.47 6 169.74 165.85 −2.29 166.77 −1.75 166.93 −1.66 167.36 −1.40
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Yan DU, Jian YU, Weiguo WU, Yongshui LIN, Ziheng CHEN, Xiaoyu ZHAO. Influence of welding residual stress on dynamic and acoustic behavior of typical ship structures[J]. Chinese Journal of Ship Research, 2023, 18(6): 216
Paper Information
Category: Ship Structure and Fittings
Received: Jan. 19, 2022
Accepted: --
Published Online: Mar. 21, 2025
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