Computer analysis of wind turbine blade dynamic loads

Conference · Thu Nov 01 04:00:00 EST 1984

OSTI ID:6030901

Thresher, R; Hershberg, E L; Wright, A D

The flapping motion of a single wind turbine rotor blade has been analyzed and equations describing the flapping motion have been developed. The analysis was constrained to allow only flapping motions for a cantilevered blade, and the equations of motion are linearized. A computer code, called FLAP (Force and Loads Analysis Program), to solve the equations of motion and compute the blade loads has been completed and compared to measured loads for a 3-bladed downwind turbine with stiff blades. The results of the program are presented in tabulated form for equidistant points along the blade and equal azimuth angles around the rotor disk. The blade deflection, slope and velocity, flapwise shear and moment, edgewise shear and moment, blade tension, and blade torsion are given. The deterministic excitations considered in the analysis include wind shear, tower shadow, gravity, and a prescribed yaw motion.

• Research Organization: Solar Energy Research Inst., Golden, CO (USA); Techtronics, Inc., Beaverton, OR (USA)
• DOE Contract Number: AC02-83CH10093
• OSTI ID: 6030901
• Report Number(s): SERI/TP-214-2563; CONF-850218-3; ON: DE85000530
• Country of Publication: United States
• Language: English

Related Subjects

17 WIND ENERGY
170602* -- Wind Energy Engineering-- Turbine Design & Operation
BENDING
COMPUTERIZED SIMULATION
DIFFERENTIAL EQUATIONS
DYNAMIC LOADS
EQUATIONS
EQUATIONS OF MOTION
MACHINERY
MECHANICAL PROPERTIES
PARTIAL DIFFERENTIAL EQUATIONS
SHEAR
SIMULATION
TENSILE PROPERTIES
TORSION
TURBINE BLADES
TURBINES
TURBOMACHINERY
WIND TURBINES