Abstract
Vibration is the oscillatory motion of a structure which is influenced by various excitation forces on it. Vibration of a passenger boat may cause passenger discomfort, structural damage etc. If the frequency of excitation coincides with any of the system natural frequency, resonance occurs. So the estimation of vibration is important in any passenger vessel. In this paper, the natural frequency of a passenger boat SWTD 75 is determined using a finite element beam model. The comparison has been carried out with classical methods. Suitable boundary conditions have been selected for approximating wave and still water conditions. Free vibration analysis of boat has been carried out in various load conditions. This may be helpful to determine the condition in which system vibrates unsafely. ANSYS, finite element software is used for analysis.
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