Accession Number : AD0861769

Title :   Natural Frequency of Axial Vibration of Turbine Wheels,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH

Personal Author(s) : Petrovsky, Vladimir

Report Date : 03 FEB 1969

Pagination or Media Count : 24

Abstract : Certain methods of calculating the natural frequency of axial vibration of bladed wheels have led to considerable errors by neglecting blade deformation. A method based on the Rayleigh-Ritz principle is presented, which considers the deformation of blades around the two main axles caused by inertia. It provides adequate values for all turbine wheels, permits establishment of the higher-than-natural frequency of the blades, the shape of vibration and the approximate variation of vibration stresses. It also considers the influence of rotation and unequal heating.

Descriptors :   (*ROTOR BLADES(TURBOMACHINERY), DEFORMATION), (*TURBINE WHEELS, VIBRATION), FREQUENCY, MATHEMATICAL PREDICTION, SHEAR STRESSES, BENDING, INTEGRAL EQUATIONS, USSR.

Subject Categories : Non-electrical Energy Conversion
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE