Analysis of an Outer Bearing Bush of a Hydropower Plant Kaplan Turbine Using Finite Element Method

摘要

The paper presents the analysis of an outer bearing bush from a Kaplan turbine, using the finite element method. The 3D model of the runner blade operating mechanism is shown. The motion is transmitted from the fork head through connecting rod to the pin lever - trunion - blade subassembly. This subassembly is borne on the hub by an outer bush and an inner one. A motion study is carried out, based on values of the fork head displacement versus time and the forces acting on the blade. The action force values are determined over a certain period of time. The dynamic loads on the outer bearing bush are imported in a static study. In this study a stress calculus is done, using the finite element method, and maximum values and plots of Von Mises stress are obtained. For modeling and simulation, SolidWorks 2010 software is used.