Progressive debonding analysis of composite blade root joint of wind turbines under fatigue loading

In this paper, progressive debonding of the blade root joint of a 660 kW wind turbine under cyclic loading is studied. Progressive fatigue debonding of this adhesive joint is analyzed using cohesive zone interface modeling. The blade is subjected to various loadings such as aerodynamic forces, centrifugal force, weight, and force due to the change in wind direction. A user defined material subroutine is used in the ANSYS finite element code to...