Abstract
Accurate Finite Element (FE) models of rotor systems are required for predicting its dynamic behavior, in dynamic design and fault identification purposes. In inverse eigen-sensitivity method of finite element model updating, the limited number of measured eigenvalues available at any spin speed restricts the maximum number of parameters that can be updated. This paper proposes a multi speed model updating method based on inverse eigenvalue sensitivities to update parameters of a rotor system. The method uses eigenvalues obtained at more than one spin speed to update the model. Such an approach allows not only to update more number of parameters but also helps in obtaining a more consistent estimate of updating parameters.
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© 2015 Springer International Publishing Switzerland
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Chouksey, M., Dutt, J.K., Modak, S.V. (2015). Multi Speed Model Updating of Rotor Systems. In: Sinha, J. (eds) Vibration Engineering and Technology of Machinery. Mechanisms and Machine Science, vol 23. Springer, Cham. https://doi.org/10.1007/978-3-319-09918-7_63
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DOI: https://doi.org/10.1007/978-3-319-09918-7_63
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Publisher Name: Springer, Cham
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Online ISBN: 978-3-319-09918-7
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