Reply To: Time-Series Fatigue Analysis

[danielshaw]

I do not believe that Ansys nCode DesignLife can do what you desire.  With a TimeSeries load provider, DesignLife will multiply the results from the file.rst (for whatever loading was used to create that file.rst) by the values in the TimeSeries input file to obtain the total stress to be used in the fatigue evaluation.  So for the image that you show, DesignLife take one FE result set and create 11 result sets for the fatigue evaluation.  It will rainflow those results to obtain the critical stress ranges and mean stresses to be used in the fatigue evaluation.  With the TimeSeries load provider, DesignLife cannot select a subset of results or interpolate results.  If you want to use a subset of result sets in the fatigue evaluation, you need to calculate FE results for those specific loadings and then use a TimeStep load provider to identify the specific result sets for DesignLife to use.