The Analysis of the Turbine Blade Fixture Crack

Abstract

In this thesis, the analysis of turbine blade fixture crack is performed. The main task is to analyse the crack of the turbine blade by using the FEM model and figure out the characteristics. In this case, crack is caused by the fixture of turbine blade root inside the disk grooves when centrifugal force is applied to it and also by its material properties. For the analytical part, the mass of the blade, rotating speed, angular velocity and radius of the centre of mass trajectory are described to find the centrifugal force. For the simulation process, the commercial software Ansys Workbench is used. In the computational analysis, static structural analysis is performed. Static structural analysis is used to determine the deformation and stress in the component caused by loads. This analysis is then compared to criteria that indicate the conditions of failure.