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The accurate assessment and analysis of nonlinear wave loads on ships and the high-frequency vibrational response of ship structures are requisites for determining the safety of ship structures. However, the reliability of numerical simulation and the analysis of their uncertainties have received relatively little attention. This paper presents a segmented keel beam hydroelastic model CFD-FEM simulation and experimental research to simulate and analyze the high-frequency response of a ship model in waves. Uncertainty analysis was performed on the simulation results to evaluate the reliability of the simulation model. The calculation results of numerical uncertainties can provide criteria for judging the convergence of results under different influencing factors and the level of uncertainty. The uncertainty levels of the impact pressure on the ship’s bow, the motion of the ship model, and the high and low-frequency wave bending moments of the ship hull are also clarified. A comparison between numerical simulation and experimental testing reveals that CFD-FEM two-way fluid-structure coupling simulation can accurately capture the high-frequency response of ship structures. The high-frequency bending moment component of the ship under cruising conditions can account for more than 49.95% of the low-frequency wave bending moment. The dynamic response of ships induced by impact loads cannot be ignored, and their influence must be considered in the structural design and safety assessment of such ships. This paper can provide a reference for the uncertainty analysis of high-frequency structural dynamic responses such as ship impact vibration.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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