We have an exciting announcement about badges coming in May 2025. Until then, we will temporarily stop issuing new badges for course completions and certifications. However, all completions will be recorded and fulfilled after May 2025.
General

General

In ANSYS nCode DesignLife should FE calculated plastic strains be used with time series load mapping in a strain-life (EN) fatigue analysis?

    • FAQFAQ
      Participant

      Strain-life fatigue uses plastic strains to predict the fatigue life. DesignLife can either use elastic FE calculated strains or elastic-plastic FE calculated strains. Time Series load mapping uses linear superposition. DesignLife does not explicitly prevent using Time Series load mapping with elastic-plastic FE results, but it is not recommended because it would entail linearly combining nonlinear results. The recommended approach is to use linear FE results with an elastic-plastic correction (e.g., Neuber method) on the combined result. Time Step load mapping is recommended to be used with elastic-plastic FE results.