This thesis is about structural analysis of composite wind turbine blade based on beam theory. The general idea of wind turbine blade including design process, coordinate system, material property, laminate plan, structural concept and load applicatio...
This thesis is about structural analysis of composite wind turbine blade based on beam theory. The general idea of wind turbine blade including design process, coordinate system, material property, laminate plan, structural concept and load applications were studied to analysis wind turbine blade. The classical laminated plate theory, modulus weighted centroid and Euler's beam theory were investigated to get a section property and structural analysis of wind turbine blade. The calculated section properties and structural analysis results by the developed code were verified and compared with commercial structural analysis code, PATRAN as a pre/post processor and ABAQUS as a solver. Flapwise stiffness and deflection which is critical to wind turbine design showed good agreement with commercial software. However, there are some deviations in edgewise stiffness and deflection, especially in inboard section due to the geometrical shape. Stress results showed similar stress distribution tendency along the blade length as the commercial software but stress level had some differences.