Chinese Journal of Ship Research, Volume. 16, Issue 3, 144(2021)
Study of L-extension type ship vibration isolation pedestal based on impedance mismatch principle
Figures & Tables(19)
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Table 1. Weight comparison of pedestals
Table 2. Static characteristics of three schemes of pedestal
View tableView in ArticleTable 2. Static characteristics of three schemes of pedestal
基座类型 最大Mises 应力/MPa 最大位移 /mm 静刚度 /(N·mm−1) 直壁 6.11 0.011 1.80×107 新型一体化 29.63 0.086 2.27×106 新型分块化 32.54 0.112 1.74×106
Table 3. The first five natural frequencies for three pedestal-deck structures
View tableView in ArticleTable 3. The first five natural frequencies for three pedestal-deck structures
基座类型 基座−甲板结构固有频率/Hz 1阶 2阶 3阶 4阶 5阶 直壁 113.97 150.68 153.45 208.13 208.55 新型一体化 45.10 99.55 126.62 151.66 175.94 新型分块化 45.06 90.04 108.47 129.01 166.09
Table 4. The total vibration level drop of pedestals
View tableView in ArticleTable 4. The total vibration level drop of pedestals
基座类型 总振级落差/dB 直壁 14.398 新型一体化 20.238 新型分块化 21.608
Table 5. Thickness design of panel and web in the cell
View tableView in ArticleTable 5. Thickness design of panel and web in the cell
厚度比 上、下面板 厚度t4/mm 中间腹板 厚度t5/mm 4/5 4 5 5/5 5 5 6/5 6 5 7/5 7 5 8/5 8 5
Table 6. The total vibration level drop of the block pedestal with different thickness ratios
View tableView in ArticleTable 6. The total vibration level drop of the block pedestal with different thickness ratios
厚度比 10~250 Hz频段总振级落差/dB 4/5 22.082 5/5 21.608 6/5 21.078 7/5 20.546 8/5 20.053
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Xinhao ZHAO, Yuanyuan LI, Yuchao YUAN, Wenyong TANG, Hongxiang XUE. Study of L-extension type ship vibration isolation pedestal based on impedance mismatch principle[J]. Chinese Journal of Ship Research, 2021, 16(3): 144
Paper Information
Category: Ship Structure and Fittings
Received: Jun. 3, 2020
Accepted: --
Published Online: Mar. 27, 2025
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