Open AccessHull girder: Forced vibration analysis by propeller
Author(s) -
Franklin Domínguez
Publication year - 2016
Publication title -
ship science and technology/ciencia y tecnologia de buques/el aprendiz
Language(s) - English
Resource type - Journals
eISSN - 2619-645X
pISSN - 1909-8642
DOI - 10.25043/19098642.127
Subject(s) - propeller , hull , rudder , propulsion , girder , structural engineering , vibration , marine engineering , wake , engineering , finite element method , propulsor , drive shaft , marine propulsion , aerospace engineering , mechanical engineering , acoustics , physics
The non-uniform wake around the propeller generates fluctuating forces on the propulsion shaft. This article presents a methodology used for the forced vibrations analysis of hull girder due to this propeller excitation. This approach is applied to a research boat considering the propeller working in the operating range using a finite element model including all ship structures, rudder, and propulsion lines with their respective supports. Added mass and damping in all submerged elements were also considered. Vibration levels acting in the vessel structure are compared with the limits proposed by ISO 6954 (2000).