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Author Firouzi, Jabbar
Affiliation Amirkabir University of Technology, Department of Maritime Engineering, Tehran, Iran
E-mail firozi.jabbar56@gmail.com
Author Ghassemi, Hassan
Affiliation Amirkabir University of Technology, Department of Maritime Engineering, Tehran, Iran
E-mail gasemi@aut.ac.ir
Author Vakilabadi, Karim Akbari
Affiliation Imam Khomeini Marine University, Department of Mechanical Engineering, Nowshahr, Iran
E-mail akbari.karim@gmail.com
ISSN printed 1733-8670
URI https://repository.scientific-journals.eu/handle/123456789/2596
Abstract A propeller shaft generally experiences three linear forces and three moments, the most important of which are thrust, torque, and lateral forces (horizontal and vertical). Thus, we consider 4DOFs (degrees of freedom) of propeller shaft vibrations. This paper is presented to obtain the vibration equations of the various coupled vibrations of the propeller shaft at the stern of a ship (including coupled torsional-axial, torsional-lateral, axial- lateral, torsional-axial, and lateral vibrations). We focused on the added hydrodynamic forces (added mass and added damping forces) due to the location of the propeller behind the ship. In this regard, the 4DOFs of the coupled vibration (torsional-longitudinal and lateral vibrations in the horizontal and vertical directions) equations of shaft and propeller systems located behind a ship were extracted with and without added mass and damping forces. Also, the effect of mass eccentricity was considered on vibrations occurring at the rear of the ship.
Pages 121-129
Publisher Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie
Keywords vibration equations
Keywords coupled vibration
Keywords shaft and propeller
Keywords added mass
Keywords ship stern
Keywords hydrodynamic coefficients
Title Vibration equations of the coupled torsional, longitudinal, and lateral vibrations of the propeller shaft at the ship stern
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ISSN on-line 2392-0378
Language English
Funding No data
Figures 4
Tables 0
DOI 10.17402/407
Published 2020-03-31
Accepted 2020-03-04
Recieved 2019-10-12

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