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Post-Resonance Backward Whirl Analysis of Accelerating Cracked Overhung Rotor System Using Fatigue Crack Model

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Advances in Nonlinear Dynamics

Part of the book series: NODYCON Conference Proceedings Series ((NCPS))

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Abstract

Propagation of fatigue cracks or bearing-induced damages in overhung rotor systems that are exposed to recurrent transitions through the critical forward whirl rotational speeds during startup and coast down operations could excite several zones of backward whirl rotational speeds. These backward whirl zones can either precede the critical forward whirl speed, and thus known as pre-resonance backward whirl (Pr-BW), or immediately follows the critical forward whirl speed and thus recently named as a post-resonance backward whirl (Po-BW). The Po-BW is a new type of backward whirl in essence it possesses different dynamic characteristics compared with the Pr-BW. The novelty is addressed in the subject paper for overhung rotor system using parametric analysis by employing breathing crack function. Finite element (FE) model and full spectrum analysis (FSA) are employed here for scrutiny. This work is presumed to potentially advance the current state-of-the-art for rotor’s Po-BW that could help in fault diagnostics and prognostics.

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Author information

Authors and Affiliations

  1. Department of Mechanical Engineering, Khalifa University of Science and Technology, AbuDhabi, UAE

    Tariq Alzarooni & Mohammad A. AL-Shudeifat

Authors
  1. Tariq Alzarooni
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  2. Mohammad A. AL-Shudeifat
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Corresponding author

Correspondence to Tariq Alzarooni .

Editor information

Editors and Affiliations

  1. Department of Structural and Geotechnical Engineering, Sapienza University of Rome, Rome, Italy

    Walter Lacarbonara

  2. Department of Mechanical Engineering, University of Maryland, College Park, MD, USA

    Balakumar Balachandran

  3. Department of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA

    Michael J. Leamy

  4. Department of Physics, Lanzhou University of Technology, Lanzhou, Gansu, China

    Jun Ma

  5. ISEP-Institute of Engineering, Polytechnic of Porto, Porto, Portugal

    J. A. Tenreiro Machado

  6. Department of Applied Mechanics, Budapest University of Technology and Economics, Budapest, Hungary

    Gabor Stepan

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Alzarooni, T., AL-Shudeifat, M.A. (2022). Post-Resonance Backward Whirl Analysis of Accelerating Cracked Overhung Rotor System Using Fatigue Crack Model. In: Lacarbonara, W., Balachandran, B., Leamy, M.J., Ma, J., Tenreiro Machado, J.A., Stepan, G. (eds) Advances in Nonlinear Dynamics. NODYCON Conference Proceedings Series. Springer, Cham. https://doi.org/10.1007/978-3-030-81162-4_65

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  • DOI: https://doi.org/10.1007/978-3-030-81162-4_65

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-030-81161-7

  • Online ISBN: 978-3-030-81162-4

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