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Abstract

Shaft misalignment and rotor unbalance contribute to the premature failure of many machine components. To understand how these failures occur and quantify the effects, investigators developed a model of a rotating assembly, including a motor, flexible coupling, driveshaft, and bearings. Equations of motion accounting for misalignment and unbalance were then derived using finite elements. A spectral method for resolving these equations was also developed, making it possible to obtain and analyze dynamic system response and identify misalignment and unbalance conditions.

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M.A. Hili, T. Fakhfakh, M. Haddar, 2019. "Failure Analysis of a Misaligned and Unbalanced Flexible Rotor", Handbook of Case Histories in Failure Analysis, Larry Berardinis

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