Structural and Thermal Research of Steam Turbine Blades by Finite Element Method

Abstract

In most modern years, the dimensions and materials of the blades of steam turbines have increased by raising the power of steam turbines. In preference to the wide-ranging application of turbo machinery and constant improvement of steam turbine blade materials and design techniques, steam turbine blade design and material behavior study technology have turned out to be a significant following in the line of investigation field. The optimized design and material behavior are the most significant factors limiting the efficiency of steam turbines, which is associated with the operating effectiveness of the steam turbines. On the other hand, because of the complicated form and the maximal effects of material behavior, it is not easy to predict and examine the behavior of the turbine blades for different geometrical shapes and materials by both the systematic method and an engineering generalization scheme. The forecasted finite element analysis method offers an efficient means to resolve those complicated project analysis and material behavior challenges. It can be utilized to establish the distribution of stress and heat flux in the entire blade geometry caused by the coupling effect of thermal stress distribution and axial loads on the blade structure. Attempts have been made to match the optimized blade thickness of the steam turbine by utilizing Finite Element Analysis.