Abstract The hull excitation generated by marine propellers constitutes one of the most significant vibration sources affecting comfort on passenger ships. Consequently, the evaluation of the propeller-generated excitation through reliable numerical tools during the preliminary stage of ship design is fundamental. The Holden Method (HM) is an empirical tool utilized to calculate the propeller-induced pressure distribution on a ship hull. The present paper validates the HM, which is applied to a twin-screw, 54-m super-yacht. Finite Element Analysis (FEA) is used to benchmark the HM numerical predictions against a set of full-scale vibration measures. The outcomes show that the magnitude of the propeller-induced dynamic excitation predicted by the HM is overestimated. Thereafter, the calibrated propeller-induced forces and the diesel engine excitation are applied to the FE model to perform a series of forced vibration analyses and estimate the global structural damping coefficient of the super-yacht. The study highlights the necessity of developing new empirical methodologies, analogous to the HM, to be applied to modern small luxury vessels.

中文翻译：

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超级游艇的振动分析：霍顿方法的验证和结构阻尼的估计

摘要 船用螺旋桨产生的船体激励是影响客船舒适度的最重要的振动源之一。因此，在船舶设计的初步阶段通过可靠的数值工具评估螺旋桨产生的激励是至关重要的。霍顿方法 (HM) 是一种经验工具，用于计算船体上螺旋桨引起的压力分布。本文验证了应用于双螺杆 54 米超级游艇的 HM。有限元分析 (FEA) 用于根据一组全尺寸振动测量对 HM 数值预测进行基准测试。结果表明，由 HM 预测的螺旋桨引起的动态激发的幅度被高估了。此后，将标定的螺旋桨诱导力和柴油机激励应用于有限元模型，进行一系列受迫振动分析并估算超级游艇的整体结构阻尼系数。该研究强调了开发新的经验方法的必要性，类似于 HM，以应用于现代小型豪华船只。