Failure analysis of a misaligned and unbalanced flexible rotor
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Shaft misalignment and rotor unbalance are major concerns in rotating machinery. In order to understand the dynamic characteristics of these machinery faults, a model of a complete motor flexible-coupling rotor system capable of describing these failures was developed. Generalized system equations of motion for a rotor under misalignment and unbalance conditions were derived using the finite element method. A spectral method was developed for resolving the equation of motion. This allows one to obtain and analyze the dynamic response and consequently to identify misalignment and unbalance faults.
Keywordsdynamic response misalignment spectral method spinning system unbalance
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