A Multiscale Fatigue Model for the Degradation of Fiber-Reinforced Materials

Short-fiber reinforced materials show material degradation under fatigue loading prior to failure. To investigate these effects, we model the constituents by an isotropic fatigue damage model for the matrix material and isotropic linear-elastic material model for the fibers. On the microscale we compute the overall material response for cell problems with different fiber orientation states with FFT-based methods. We discuss a concept to model order reduction, that enables us to apply the model efficiently on component scale.