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Comparative Study: Linear and Nonlinear Transient Stability Analysis for Meso Scale Rotor with Gas Foil Journal Bearings

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Asset Intelligence through Integration and Interoperability and Contemporary Vibration Engineering Technologies

Part of the book series: Lecture Notes in Mechanical Engineering ((LNME))

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Abstract

A comparative study on linear and nonlinear transient stability analysis of a meso scale rotor supported on gas foil journal bearings is carried out. Steady and unsteady Reynolds equations are solved by using the control volume formulation with a power law scheme and the Gauss–Seidel method. The modal impedance and the time domain orbit simulation are used to obtain the stability parameter: the threshold rotor mass for the linear and nonlinear transient methods respectively. The modal impedance is calculated by using the linear stiffness and damping coefficients. However, the orbit simulation solves explicitly the journal equations of motion, the compressible unsteady Reynolds equation and the equation of foil deformation. The threshold rotor mass which gives the stability threshold value for a given operating speed and load is obtained. It is found that there is a significant difference between the values of threshold rotor mass predicted by the linear and nonlinear transient stability methods.

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Author information

Authors and Affiliations

  1. Department of Mechanical Engineering, Motilal Nehru National Institute of Technology Allahabad, Allahabad, India

    Skylab P. Bhore

  2. Department of Mechanical Engineering, Indian Institute of Technology Delhi, Delhi, India

    Ashish K. Darpe

Authors
  1. Skylab P. Bhore
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  2. Ashish K. Darpe
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Corresponding author

Correspondence to Skylab P. Bhore .

Editor information

Editors and Affiliations

  1. The Asset Institute, Queensland University of Technology, Brisbane, QLD, Australia

    Joseph Mathew

  2. Department of Architecture and Civil Engineering, City University of Hong Kong, Hong Kong SAR, China

    C.W. Lim

  3. School of Chemistry, Physics, Mechanical Engineering, Queensland University of Technology, Brisbane, QLD, Australia

    Lin Ma

  4. Synengco Pty Ltd, Highgate Hill, QLD, Australia

    Don Sands

  5. School of Chemistry, Physics, Mechanical Engineering, Queensland University of Technology, Brisbane, QLD, Australia

    Michael E. Cholette

  6. School of Mechanical and Manufacturing Engineering, UNSW Sydney, Sydney, NSW, Australia

    Pietro Borghesani

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Bhore, S.P., Darpe, A.K. (2019). Comparative Study: Linear and Nonlinear Transient Stability Analysis for Meso Scale Rotor with Gas Foil Journal Bearings. In: Mathew, J., Lim, C., Ma, L., Sands, D., Cholette, M., Borghesani, P. (eds) Asset Intelligence through Integration and Interoperability and Contemporary Vibration Engineering Technologies. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-319-95711-1_8

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  • DOI: https://doi.org/10.1007/978-3-319-95711-1_8

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-95710-4

  • Online ISBN: 978-3-319-95711-1

  • eBook Packages: EngineeringEngineering (R0)

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