Linear Static and Dynamic Analysis for Hinged Rotor Blades of 60 M Span for a Two Bladed Horizontal Axis Wind Energy Converter

摘要

The linear static and dynamic behavior of a rotor blade of a horizontal axis wind energy converter with flap and lag hinges and with coupling of flap and pitch was investigated. The linearized equations of motion are developed using a finite element idealization considering quasisteady aerodynamic forces. The complex eigenfrequencies are calculated. The time history response of the rotor blade is computed for cyclic gravitational loads at rated operation and for a global gust. The stresses at selected points along the blade and forces and moments acting on the tower are calculated from the structural deformation.