Turbomachinery rotor–stator unilateral contact induced interactions play a growing role in lifecycle analysis and thus motivate the use of accurate numerical prediction tools. Recent literature confirmed by ongoing in-house experiments have shown the importance of thermomechanical coupling effects in such interactions. However, most available (possibly reduced-order) models are restricted to the sole mechanical aspects. This work describes a reduction technique of thermomechanical models involving unilateral contact and frictional contact occurrences between rotor and stator components. The proposed methodology is grounded on Guyan and Craig–Bampton methods for the reduction of the structural dynamics in conjunction with Krylov subspace techniques, and specifically the Craig–Hale approach, for the reduction of the thermal equations. The method has the capability to drastically reduce the size of the model while preserving accuracy. It stands as a reliable strategy to perform simulations of thermomechanical models with localized mechanical and thermal loads.
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February 2019
Research-Article
Thermomechanical Model Reduction for Efficient Simulations of Rotor-Stator Contact Interaction
Nicolas Guérin,
Nicolas Guérin
École Centrale de Lyon,
Laboratoire de Tribologie et
Dynamique des Systèmes,
Écully 69134, France;
Laboratoire de Tribologie et
Dynamique des Systèmes,
Écully 69134, France;
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Anders Thorin,
Anders Thorin
Structural Dynamics and Vibration Laboratory,
McGill University,
Montreal, QC H3A0C3, Canada
McGill University,
Montreal, QC H3A0C3, Canada
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Fabrice Thouverez,
Fabrice Thouverez
École Centrale de Lyon,
Laboratoire de Tribologie et
Dynamique des Systèmes,
Écully 69134, France
Laboratoire de Tribologie et
Dynamique des Systèmes,
Écully 69134, France
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Mathias Legrand,
Mathias Legrand
Structural Dynamics and Vibration Laboratory,
McGill University,
Montreal, QC H3A0C3, Canada
McGill University,
Montreal, QC H3A0C3, Canada
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Patricio Almeida
Patricio Almeida
Safran Helicopter Engines,
Bordes 64510, France
Bordes 64510, France
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Nicolas Guérin
École Centrale de Lyon,
Laboratoire de Tribologie et
Dynamique des Systèmes,
Écully 69134, France;
Laboratoire de Tribologie et
Dynamique des Systèmes,
Écully 69134, France;
Anders Thorin
Structural Dynamics and Vibration Laboratory,
McGill University,
Montreal, QC H3A0C3, Canada
McGill University,
Montreal, QC H3A0C3, Canada
Fabrice Thouverez
École Centrale de Lyon,
Laboratoire de Tribologie et
Dynamique des Systèmes,
Écully 69134, France
Laboratoire de Tribologie et
Dynamique des Systèmes,
Écully 69134, France
Mathias Legrand
Structural Dynamics and Vibration Laboratory,
McGill University,
Montreal, QC H3A0C3, Canada
McGill University,
Montreal, QC H3A0C3, Canada
Patricio Almeida
Safran Helicopter Engines,
Bordes 64510, France
Bordes 64510, France
1Corresponding author.
Contributed by the Structures and Dynamics Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received June 26, 2018; final manuscript received July 5, 2018; published online September 19, 2018. Editor: Jerzy T. Sawicki.
J. Eng. Gas Turbines Power. Feb 2019, 141(2): 022501 (9 pages)
Published Online: September 19, 2018
Article history
Received:
June 26, 2018
Revised:
July 5, 2018
Citation
Guérin, N., Thorin, A., Thouverez, F., Legrand, M., and Almeida, P. (September 19, 2018). "Thermomechanical Model Reduction for Efficient Simulations of Rotor-Stator Contact Interaction." ASME. J. Eng. Gas Turbines Power. February 2019; 141(2): 022501. https://doi.org/10.1115/1.4040858
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