Print ISSN: 1681-6900

Online ISSN: 2412-0758

Author : A. S. Salih, Mohammed

Application Studies for Reducing the Harmful Vibrations on Blades of High and Low Pressure Stages of Steam Turbines

Safaa H. Abdulrahman; Adnan D. Mohammed; Mohammed A. S. Salih

Engineering and Technology Journal, 2008, Volume 26, Issue 3, Pages 278-290

In this work the dynamic behavior of blade disc - turbo rotor - bearing system is
investigated analystically 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.