Supplemental Learning Module ME 305 Mechanics of Materials

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Presentation transcript:

Supplemental Learning Module ME 305 Mechanics of Materials COHERENT APPLICATION THREADS CATs Wind Turbines Supplemental Learning Module ME 305 Mechanics of Materials Blade bending and structural design Don Wroblewski Associate Professor, Mechanical Engineering Associate Chair, Aerospace Engineering Undergraduate Program

Wind Turbine Blade Loading Primary load is bending load due to lift Torsion V (Wind speed) Torque Forces Thrust forces y Bending Moment Diagram Mx z x Rotation

Wind Turbine Blade Structural Design I-Beam Flange: bending load Shear web: shear load Wind Turbine Blade with Spar Spar Caps: bending load Spar Web: shear load Skin or shell: Torsion and buckling Wind Turbine Blade with Box Spar Box spar provides increased torsional support

WIND TURBINE BLADE BEAM ANALYSIS BENDING STRESS y Compression Tension yMAX x M z