Chinese Journal of Ship Research, Volume. 18, Issue 2, 235(2023)
Uncertainty analysis of propulsion shafting vibration
Figures & Tables(19)
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Table 1. Model sizes of ship propulsion shafting system and material parameters
View tableView in ArticleTable 1. Model sizes of ship propulsion shafting system and material parameters
参数 轴段Li 1 2 3 4 轴段截面直径/ mm 110 轴段长度 / m 0.01 0.59 1.60 0.80 轴段杨氏模量 /Pa 2.1×1011 轴段密度/ (kg·m−3) 7 800
Table 2. Comparison of lateral natural frequency of ship shafting obtained by different methods
View tableView in ArticleTable 2. Comparison of lateral natural frequency of ship shafting obtained by different methods
阶数 不同方法计算的横向固有频率/Hz 误差/% Matlab ANSYS 1 22.629 22.625 0.02 2 39.868 39.859 0.02 3 69.424 69.432 0.01 4 168.520 168.664 0.08 5 286.707 287.313 0.21 6 446.862 448.642 0.40 7 665.472 669.630 0.62
Table 3. Four working conditions of ship propulsion shafting system under different excitations
View tableView in ArticleTable 3. Four working conditions of ship propulsion shafting system under different excitations
工况 激励力区间/N 自相关系数函数 工况1 ${ {\boldsymbol{F} }_{} }^{\rm{I} }(t) = [ - {\text{30} },{\text{30} }]$ $\rho {\text{ = } }{{\rm{e}}^{ - \lambda \left| \tau \right|} }$ ，$ \lambda = 1 $ 工况2 ${\boldsymbol{F} }_1^{\rm{I} }(t) = [ - {\text{30} },{\text{30} }]$ ${\boldsymbol{F} }_2^{\rm{I} }(t) = [ - 15,15]$ ${\rho _1}{\text{ = } }{{\rm{e}}^{ - \lambda \left| \tau \right|} }$ ，$ \lambda = 1 $ ${\rho _2}{\text{ = } }{{\rm{e}}^{ - \lambda \left| \tau \right|} }$ ，$ \lambda = 3 $ 工况3 ${{\boldsymbol{F}}^{\rm{I} } }(t) = [ - {\text{30} },{\text{30} }]$ $\rho {\text{ = } }{{\rm{e}}^{ - \lambda \left| \tau \right|} }$ ，$ \lambda = 1 $ 工况4 ${\boldsymbol{F} }_1^{\rm{I} }(t) = [ - {\text{30} },{\text{30} }]$ ${\boldsymbol{F} }_2^{\rm{I} }(t) = [ - 30,30]$ ${\rho _1}{\text{ = } }{{\rm{e}}^{ - \lambda \left| \tau \right|} }$ ，$ \lambda = 1 $ ${\rho _2}{\text{ = } }{{\rm{e}}^{ - \lambda \left| \tau \right|} }$ ，$ \lambda = 1 $
Table 4. Comparison of lateral displacement response
View tableView in ArticleTable 4. Comparison of lateral displacement response
位置 横向位移响应/m 工况1 工况2 轴承1 [−0.868×10−6，0.868×10−6] [−0.885×10−6，0.885×10−6] 轴承2 [−1.203×10−6，1.203×10−6] [−2.900×10−6，2.900×10−6] 螺旋桨 [−6.528×10−6，6.528×10−6] [−6.538×10−6，6.538×10−6]
Table 5. Comparison of longitudinal displacement response
View tableView in ArticleTable 5. Comparison of longitudinal displacement response
位置 纵向位移响应/m 工况3 工况4 轴承1 [−3.083×10−6，3.083×10−6] [−4.343×10−6，4.343×10−6] 轴承2 [−3.059×10−6，3.059×10−6] [−4.326×10−6，4.326×10−6] 螺旋桨 [−3.092×10−6，3.092×10−6] [−4.350×10−6，4.350×10−6]
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Huihui ZHOU, Zengguang LI, Tianyun LI, Xiang ZHU, Qingsheng LI. Uncertainty analysis of propulsion shafting vibration[J]. Chinese Journal of Ship Research, 2023, 18(2): 235
Paper Information
Category: Marine Machinery, Electrical Equipment and Automation
Received: Sep. 24, 2021
Accepted: --
Published Online: Mar. 20, 2025
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