NDLI: Updating Bearing Stiffness and Damping Coefficients of a Rotor System

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Journal of The Institution of Engineers (India): Series C : Volume 94, Issue 3, July 2013

Journal of The Institution of Engineers (India): Series C : Volume 94, Issue 2, April 2013

Journal of The Institution of Engineers (India): Series C : Volume 94, Issue 1, January 2013

Journal of The Institution of Engineers (India): Series C : Volume 93

Updating Bearing Stiffness and Damping Coefficients of a Rotor System

Content Provider	Springer Nature Link
Author	Modak, S. V. Dutt, J. K. Chouksey, M.
Copyright Year	2013
Abstract	Finite element (FE) models of structures have been quite useful in both static and dynamic analyses of structures. However, quite often, these models are not reliable enough since predictions based on them may not be found to have acceptable correlation with experimentally obtained data. This paper attempts updating of bearing radial and tilt stiffness as well as damping parameters of a rotor system by using inverse eigen sensitivity method (IESM). Non-proportional viscous damping model has been used in modelling damping coefficients of bearings. The state space form of equations of motion of the system is used in applying the IESM for model updating. The results show that both stiffness and damping coefficients of bearings can be effectively found out by using the IESM. The method is found to update the eigenvalues quite well even under the presence of measurement noise.
Starting Page	365
Ending Page	372
Page Count	8
File Format	PDF
ISSN	22500545
Journal	Journal of The Institution of Engineers (India): Series C
Volume Number	94
Issue Number	4
e-ISSN	22500553
Language	English
Publisher	Springer India
Publisher Date	2013-11-22
Publisher Place	India
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Inverse eigen sensitivity method Modal analysis Industrial and Production Engineering Mechanical Engineering Bearing coefficients Aerospace Technology and Astronautics Model updating
Content Type	Text
Resource Type	Article
Subject	Ocean Engineering Industrial and Manufacturing Engineering Mechanical Engineering Aerospace Engineering

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