Abstract

In this paper the comparison of material effort models: the classic Huber-Mises-Hencky approach and the Burzynski condition was presented. Burzynski yield condition is pressure sensitive and naturally takes into account the strength differential effect, which has been observed in nickel-base super alloys such as Inconel 718. Investigation was performed during thermal-fluidstructure interaction analysis of a power turbine guide vane of turbine helicopter engine PZL-10W. Firstly, computational fluid dynamics conjugate heat transfer analysis was carried out, then stress analysis was performed with boundary conditions obtained via computational fluid dynamics analysis. During stress analysis, two mentioned above equivalent stress definitions were applied and difference in material effort modelling by them was shown.