COMPUTATIONAL AND EXPERIMENTAL IMPACT STUDY INITIAL PAIRING PARAMETER OF BANDAGE SHELVES PAIRS OF BANDED BLADES FOR STATIC STRESSES IN THE FEATHER OF THE SHOULDER BLADES

The paper discusses the results of an experimental study of the influence of the initial parameter of the conjugation of the bandage flanges on static stresses in the blade feather, as well as a comparison of the results obtained with the calculated data. The work was carried out for both uncooled and cooled turbine rotor blades. It was found that with an increase in the initial conjugation parameter, the static stresses in the root section of the blades increase in direct proportion. It was found that the static stresses in the feather for the left and right blades are almost the same with the same conjugation parameter, both for non-cooled blades and for cooled blades. There is a significant error between the experimental and calculated values, while the nature of the dependence of stresses on the initial parameter is similar – rectilinear.