Numerical investigation of flexible beams for electromagnetic energy harvesting under the wakes from upstream cylinder

Electro Impulse De-Icing is an alternative de-icing concept which operates based on electro-mechanical impulses. These impulses can be modeled by coupled transient electro-mechanical simulations using the finite element method, whereas the process of ice shedding can be simulated with a simple interfacial shear stress criterion. In this paper, the time-consuming coupled analysis is replaced by a structural simulation where the magnetic forces are approximated by comparison with the coupled results. Although the adhesive de-icing criterion serves to represent the de-icing process very well, it lacks the modeling of a realistic dynamic response of the structure. Therefore, the simula- tion is extended by a cohesive zone model in order to take into account multiple radially propagating cracks that occur in combination with ice shedding. Numerical studies are performed for an ice-covered aluminium plate and validated by experimental results. The influence of cohesive crack growth and adhesive debonding on the structural response and de-icing behavior is investigated