Finite Element Modeling of Composite Wind Turbine Blade and Static Flap-Bending Analysis

Аннотация

This paper provides structural studies of composite wind turbine blade construction and evaluates static analysis results for 9-meter-long carbon-fiberglass hybrid blade of conventional design. The blade was designed to demonstrate the efficient use of carbon fiber in the spar cap of a wind turbine blade. The blade was constructed with conventional dry lay-up and VARTM (Vacuum Assisted Resin Transfer Molding) infusion processes and designed for 100 kW stall-controlled wind turbine systems. NREL S-series airfoils are used for current blade geometry. Based on composite laminate theory and finite element method optimal blade design is attained through analyzing their deflection and stress-strain. The finite element analysis (FEM) of designed blade has been performed by using commercial code (ANSYS) and the results obtained from these analyses are verified by the experimental work. In this work, The SNL (Sandia National Laboratories, USA) CX-100 wind-turbine blade is taken as a representative blade to be investigated.