Results 21 to 30 of about 16,108 (315)

Parameter identification of ship motion mathematical model based on full-scale trial data

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2022
Using the full-scale trial data of vessel YUKUN, a parameter identification scheme, Support Vector Regression (SVR) combined with modified grey wolf optimizer (MGWO), is proposed for identifying ship motion model.
Yao Meng, Xiufeng Zhang, Jinxin Zhu
doaj   +1 more source

A NUMERICAL STUDY ON THE OPEN WATER PERFORMANCE OF A PROPELLER WITH SINUSOIDAL PITCH MOTION

open access: yesBrodogradnja, 2020
When a ship operates in waves, the ship moves with 6 degrees-of-freedom, and a propeller at the stern of the ship cannot avoid moving due to the ship motion.
Kwang-Jun Paik   +4 more
doaj   +1 more source

Prediction of Flooded Compartment Damage Locations in Ships by Using Spectrum Analysis of Ship Motions in Waves

open access: yesJournal of Marine Science and Engineering, 2021
Considering the nature of marine accidents, even a single accident can result in significant damage to the environment and property, as well as loss of life.
Hye-young Son   +6 more
doaj   +1 more source

Research on Influence of Tank Sloshing on Ship Motion Response under Different Wavelengths

open access: yesApplied Sciences, 2022
The motion of the liquid-carrying ship under waves is simultaneously affected by the external wave moment and the sloshing moment of the internal tank, which makes the motion of the ship more complicated.
Xinsheng Fan, Zhenhong Hu, Xing Zheng
doaj   +1 more source

Survey of ship platoon cooperative control

open access: yesZhongguo Jianchuan Yanjiu, 2023
The ship platoon will become an important form of water transport in the future. This paper analyzes the characteristics and control principle of ship platoon cooperative control, and analyzes the current situation and methods in the four aspects of ship-
Xiumin CHU   +5 more
doaj   +1 more source

Machine Learning for Short-Term Prediction of Ship Motion Combined with Wave Input

open access: yesApplied Sciences, 2023
There is a response relationship between wave and ship motion. Based on the LSTM neural network, the mapping relationship between the wave elevation and ship roll motion is established. The wave elevation and ship motion duration data obtained by the CFD
Ximin Tian, Yang Song
doaj   +1 more source

Study of Two Ships Approaching Process and Towing Motion under Wave Action

open access: yesJournal of Marine Science and Engineering, 2022
The rescue of ships in distress at sea relies mainly on rescue vessels, which includes the approaching process and the towing motion of the two ships. Ship rescue can be reduced to a two-ship problem, primarily involving the relative motion between ships
Shengtao Chen   +4 more
doaj   +1 more source

CFD simulation of ship turning motion in waves

open access: yesZhongguo Jianchuan Yanjiu, 2019
[Objectives] The ship turning motion can reflect the steerability of the ship during navigation and is closely related to the ship navigation safety.[Methods] In this paper, the direct numerical simulation of the free turning motion of the standard ship ...
Wang Jianhua, Wan Decheng
doaj   +1 more source

Dynamic Characteristics Analysis and Mooring System Optimization of Wreck Salvage in Off-Bottom Stage Based on Seabed Resistance Force Time History

open access: yesShanghai Jiaotong Daxue xuebao, 2023
In this paper, a method for analyzing the dynamic characteristics of the sunken ship salvage system based on the accurate time history of the seabed resistance force is proposed.
XIN Shangzhe, WANG Lei, FAN Jinyu, ZHOU Dongrong, CHEN Shihai, ZHU Xiaodong
doaj   +1 more source

An Unscented Kalman Filter Online Identification Approach for a Nonlinear Ship Motion Model Using a Self-Navigation Test

open access: yesMachines, 2022
This paper proposes a method for the online parameter identification of nonlinear ship motion systems. First, the motion system of a ship is nonlinear, and in the course of sailing, the motion parameters of the ship will change with the change of the ...
Jian Zheng   +4 more
doaj   +1 more source

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