Nichtlineare und dynamische Effekte bei der FE-Simulation - Auswirkung auf die Lebensdauer

The example of a swivel hub shows that the consideration of contact and preloaded bolted joints in a static FEanalysis has a substantial effect on fatigue life prediction. By neglecting these non-linear effects the predicted fatigue critical location differs from that determined in Wöhler tests. In addition it was observed that in the operating load simulation test, inertia forces occur in consequence of accelerations. The applied inertia relief method considers these effects and shows in the unit load analysis advantages in relation to the conventional method. Beyond it the component is not subjected to any stiffening boundary conditions and the MBS-signals can be considered for all connecting points in the fatigue life simulation.