One of the common failure modes of the diesel-engine turbochargers is the high-cycle fatigue (HCF) of the turbine-wheel blades. Mistuning of the blades due to the casting process is believed to contribute to this failure mode. Currently available commercial finite-element software requires high computational capacity to model statistical mistuning. The objective is to develop a simple model tailored for the evaluation of statistical mistuning in diesel-engine turbocharger turbine wheels that can be used in the product design stage. This research focuses on the radial turbine-wheel design that is typically used in 6–12 L diesel-engine applications. A continuous twisted-blade model is developed in matlab using finite element techniques. The model is tested and validated against different symmetrical cases as well as abaqus results.
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August 2017
Research-Article
The Twisted-Blade Model for Radial-Turbine Mistuning
Valentina Futoryanova
Valentina Futoryanova
Dynamics and Vibration Group,
Department of Engineering,
University of Cambridge,
Cambridge CB2 1PZ, UK
e-mail: vf211@cam.ac.uk
Department of Engineering,
University of Cambridge,
Cambridge CB2 1PZ, UK
e-mail: vf211@cam.ac.uk
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Valentina Futoryanova
Dynamics and Vibration Group,
Department of Engineering,
University of Cambridge,
Cambridge CB2 1PZ, UK
e-mail: vf211@cam.ac.uk
Department of Engineering,
University of Cambridge,
Cambridge CB2 1PZ, UK
e-mail: vf211@cam.ac.uk
Contributed by the IC Engine Division of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received January 2, 2017; final manuscript received January 24, 2017; published online April 4, 2017. Editor: David Wisler.
J. Eng. Gas Turbines Power. Aug 2017, 139(8): 082803 (8 pages)
Published Online: April 4, 2017
Article history
Received:
January 2, 2017
Revised:
January 24, 2017
Citation
Futoryanova, V. (April 4, 2017). "The Twisted-Blade Model for Radial-Turbine Mistuning." ASME. J. Eng. Gas Turbines Power. August 2017; 139(8): 082803. https://doi.org/10.1115/1.4035914
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