Efficient Fatigue Modelling For Large Finite Element Models

Abstract

For a multi-material component subjected to vibrations fatigue analyses have been performed. Complexity arises from the different materials used in the component, which results in multiple resonance points. The presence of numerous resonance points makes the process to evaluate both cumbersome and time consuming. Additionally, the presence of multiaxial vibrational loading necessitates the computation of the most suitable equivalent stress. This involves determining distinct equivalent stress values for different materials, further adding complexity to the fatigue analysis. In the present work to simplify these issues, an efficient failure criteria has been developed utilizing a Python script that automatically selects the specified equivalent stress for different materials to predict the failure of the component.