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2020 | OriginalPaper | Chapter

Investigations on Nonlinearity for Health Monitoring of Rotor Bearing System

Authors : Aditya Sharma, P. K. Kankar, M. Amarnath

Published in: Reliability and Risk Assessment in Engineering

Publisher: Springer Singapore

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Abstract

In this work, the nonlinear dynamic analysis of rotor bearing system is carried out. The combined effects of the parametric excitation such as nonlinear stiffness, varying compliance and Hertzian contact force are considered and formulated in the mathematical model. The analysis is carried out at various rotor speeds to monitor and predict the behavior of the system. This work also represents the vibration frequencies arising from the nonlinear dynamic responses of unbalanced rotor supported on cylindrical roller bearing. The qualitative and quantitative assessments of nonlinearity of the rotor bearing system have been performed using Poincaré maps and Higuchi’s fractal dimensions, respectively. The developed mathematical model is also validated with the experimental analysis, and results are presented in the form of frequency spectrums and fractal dimensions.

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Title: Investigations on Nonlinearity for Health Monitoring of Rotor Bearing System
Authors: Aditya Sharma
P. K. Kankar
M. Amarnath
Publisher: Springer Singapore
Book: Reliability and Risk Assessment in Engineering
Print ISBN: 978-981-15-3745-5

Electronic ISBN: 978-981-15-3746-2

Copyright Year: 2020
DOI: https://doi.org/10.1007/978-981-15-3746-2_22