One of the common failure modes of the diesel-engine turbochargers
is high-cycle fatigue of the turbine-wheel blades.
Mistuning of the blades due to the casting process is believed
to contribute to this failure mode. The turbine-wheel
designs under investigation is radial and is typically used
in 6-12L diesel engine applications. A continuous twistedblade
model is developed in Matlab using finite-element
techniques. The model is tested and validated against different
symmetrical cases as well as ABAQUS results. It is
proposed to use this model for statistical mistuning studies
of turbine wheels in the product design stages.