Abstract
The objective of our work is the association of vibratory diagnosis knowledge with an acoustic part including frequential and spatial criteria for the identification of noise sources in rotating machinery. To control parameters for this difficult problem, one proceeds by stages and with confrontation of theoretical and experimental methods. This paper presents the theoretical modelling of a rotor on bearings system, with a simulation of several defects such as misalignment, imbalance and defective bearings. Pressure field calculations are performed with the help of an effective method based on modelling a structure by a set of point sources placed on the radiating surface.
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