Application studies for reducing the harmful vibrations on blades of high and low pressure stages of steam turbines

Abstract EN

In this work the dynamic behavior of blade disc-turbo rotor-bearing system is investigated analytically using the transfer matrix method, also the analysis applies the finite element method (Ansys Package) choosing the brick type element, for comparison of the results.

The major aim of this paper are to study the effects of varying the temperature, fluid flow impact on the blades surface ; losing a faction of the blade mass to have imbalama in system ; blade root flexibility and centrifugal force along the blade length ; gyroscopic moments, damping and stiffness values of bearings on the dynamic behavior of the blade disc–Turbo rotor–Bearing system.