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Research on Simulation of Ship Maneuvering-swaying Coupling Motion of 6-DOF in Waves

Author: LiuWeiMing
Tutor: DingYong
School: Harbin Engineering University
Course: Design and manufacture of ships and marine structures
Keywords: Shipping Maneuverability Swaying motions Numerical simulation Wave force
CLC: U661.3
Type: Master's thesis
Year: 2010
Downloads: 208
Quote: 3
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Abstract


The coupled motion of the ship in waves six degrees of freedom \affected. I established in the the onboard translational coordinates the movement of the ship six-degree-of-freedom mathematical model . Based on MMG ship motion modeling point of view , the external force acting on the hull into the inertial force , viscous force , propeller thrust , rudder force and wave force of several parts considered separately . Among them, the the swaying motions water power slice method , incident waves using three-dimensional method , estimated second - order wave forces . In order to verify the correctness of the mathematical model of this article , the ship in regular waves , irregular waves of constant speed direct hydrostatic steady rotation Z steering movement was simulated . After the comparison of the results of the simulation ship model test results confirmed the mathematical model of motor sailing ship in waves constant speed direct and hydrostatic simulation results are authentic , can be used to ship in waves \manipulation - sway coupled motion simulation . Following on the basis of a large number of simulation , I found the ship in waves turn three typical trajectory of navigation , and the characteristics of the trajectory of the instantaneous rotation center of the circle and instantaneous radius of gyration two quantities to analyze the ship trajectory the extent of drift and stability. The impact of the different components of the wave forces on the motion of the ship , focusing on the ship at different wave height , wavelength and wave to the rotary motion of regular waves were calculated and analyzed , the simulation of the rotary motion of the ship in irregular waves calculation . According to the results of the analysis , a motorized sailing guide ships on the waves with the reference value conclusion has a certain value of engineering . Also found that the lack of this paper, the mathematical model for subsequent theoretical study also put forward some suggestions for improvement .

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CLC: > Transportation > Waterway transport > Marine Engineering > Ship Principle > Ship dynamics
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