INVERSE DYNAMIC ANALYSIS OF THE FRANCIS TURBINE DIRECTOR DEVICE

摘要

The paper analyzes the dynamic behavior of the director device mechanism of a hydraulic turbine, known also as the wicket gate or governing mechanism of the turbine. In order to identify the dynamic response of the mechanism components, it is applied an inverse dynamic analysis substituted by experimental research and the finite element method. For the dynamic analysis, the formalism Newton-Euler is used, complemented by Lagrange multipliers method. The forces acting in the kinematic pairs in dynamic regime are identified, knowing the driving force and the resistance force, whose variation laws were experimentally determined.