Wind_Energy_Essentials_Lecture 6a

Wind_Energy_Essentials_Lecture 6a - 11/9/2010 EE5940: Wind...

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11/9/2010 1 EE5940: Wind Essentials Materials and Structural Reliability Sue Mantell Mechanical Engineering Overview Quick overview of Loads Typical characteristics of rotor blades Material Selection Manufacturing Reliability Focus on Rotor Blades “the most complex structural component of a wind turbine”
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11/9/2010 2 What are the loads on a rotor blade? • Variable wind speed along the tip of the blade • Loads are both static and dynamic (varied wind speed, and rotation) • Flapwise bending • Cantilever bending lift gravity What is the Blade Size?
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11/9/2010 3 Aerodynamic shape Lightweight Size/twist Desirable Rotor Blade Features Taper Size Desirable Material Properties Size Lightweight Stiff Strong Complex Shape Long Fatigue Life Rotor Qualities Modulus Density Fracture toughness Specific Strength (Y/ ρ ) Specific Stiffness (E/ ρ ) Material Properties
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4 Materials Selection Merit index for a beam 2 / 1 b E M ρ = Considerations of beam weight (f(
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This note was uploaded on 02/26/2011 for the course EE 523 taught by Professor Dr.hopkins during the Spring '11 term at SUNY Buffalo.

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Wind_Energy_Essentials_Lecture 6a - 11/9/2010 EE5940: Wind...

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