A review of stochastic finite element and nonparametric modelling for ship propulsion shaft dynamic alignment

L Lu, G Li, P Xing, H Gao, Y Song - Ocean Engineering, 2023 - Elsevier
Ship propulsion shafting is inevitably subject to various uncertainties during navigation.
Uncertain numerical models can reflect the dynamic behaviour of the shafting more …

Experimental study on the distributed lubrication characteristics of full-size water-lubricated stern bearings under hull deformation

W Ouyang, Q Liu, J Xiao, J Huang, Z Zhang, L Wang - Ocean Engineering, 2023 - Elsevier
A full-size test rig of water-lubricated stern bearing (WSB) with an elevation adjustment
device was built. High-precision wireless telemetry device obtained four film pressure …

A real-time shaft alignment monitoring method adapting to ship hull deformation for marine propulsion system

JW Cheng, WJ Bu, L Shi, JQ Fu - Mechanical Systems and Signal …, 2023 - Elsevier
Shaft alignment states are strictly stipulated in the marine propulsion system. However, there
are relatively limited studies on shaft alignment monitoring and control considering the …

Study of the hull structural deformation calculation using the matrix displacement method and its influence on the shaft alignment

W Zhou, Y Zhao, H Yuan, X Wang - Journal of Marine Science and …, 2023 - mdpi.com
The analysis of the influence of hull deformation on shaft alignment is predominately
conducted using the finite element method (FEM), which is time-consuming, labor-intensive …

Application of deep reinforcement learning to predict shaft deformation considering hull deformation of medium-sized oil/chemical tanker

SP Choi, JU Lee, JB Park - Journal of Marine Science and Engineering, 2021 - mdpi.com
The enlargement of ships has increased the relative hull deformation owing to draft
changes. Moreover, design changes such as an increased propeller diameter and pitch …

A novel 4-DOF marine stern bearing support model considering discrete distribution effects

Z Chen, J Wang, R Li, Y Liu - Ocean Engineering, 2024 - Elsevier
To address the issue of the traditional support model's inability to accurately describe the
non-uniform dynamics behavior inside the bearing, this study proposes a novel 4-degree-of …

[HTML][HTML] Improved whale optimization-based parameter identification algorithm for dynamic deformation of large ships

Y Wang, Y Zhang, D Xu, W Miao - Ocean Engineering, 2022 - Elsevier
In the field of ship deformation measurement, the inertial matching method has become a
current research hotspot due to its advantages of high accuracy, easy implementation, and …

Changes in propeller shaft behavior by fluctuating propeller forces during ship turning

JW Lee, QD Vuong, B Jeong, J Lee - Applied Sciences, 2022 - mdpi.com
It is known that a ship's shafting system can be adversely affected by hull deformation,
variations in the engine power, the propeller load, and eccentric propeller thrusts, thereby …

Machine learning performance comparison for main propulsive shafting systems alignment

DL Magalhães, DHC de SS Martins, BM Castro… - Ocean …, 2023 - Elsevier
The ship shaft alignment is crucial to achieve a high-performance propulsion system. This
alignment is carried out, still in drydock, by adjusting the bearings' offsets. However, there …

Application of the stiffness method to the optimization analysis of a marine propulsion shaft system

M dos Reis Farias, LAR Baptista, ACR Troyman… - Journal of the Brazilian …, 2023 - Springer
Reliable calculation of bearings reaction of marine propulsion shaft is one of the most
important tasks in the project and maintenance of a propulsion system. This can prevent …