Modal analysis of an iced offshore composite wind turbine blade

In the far north, low temperatures and atmospheric icing are a major danger for safe operation of wind turbines. It can cause several problems in fatigue loads, balance rotor aerodynamics. With aim improving rigidity turbine blade, composite materials currently being used. A numerical work aims to evaluate effect ice on blades determine most adequate material under conditions. Different thicknesses considered lower part blade. this paper, modal analysis is performed obtain natural frequencies corresponding mode shapes structure. This elaborated using finite element method (FEM) computer program through ABAQUS software. The results have laid that blade varied according thickness there no resonance phenomenon.