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.
The Twisted-Blade Model for Radial-Turbine Mistuning
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.
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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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