With Fatigue Wizard, you can perform a fatigue damage calculation using a ‘load spectrum' or ‘duty cycle’. This type of analysis is a computationally efficient method to assess a structure or component in terms of its durability over various loading conditions.
You control the spectrum analysis with a comma separated (.csv) text file containing the description of the applied loads and repetitions of each load. To edit these files, use a text editor, such as Notepad, and import into the Fatigue Wizard in Step 4.
Below is an example of the spectrum file format, and a description of each of the required values
Using the example above, the damage summation is performed as follows:
The example spectrum file in the comma separated format is as follows:
11
10000000,3500000,3100000,2500000,2100000,1600000,600000,130000,50000,10000,5000,$
0.5,0.125,0.25,0.375,0.5,1,1,1,1,1,1,$
0.1,0.25,0.5,0.75,1,2,3,5,10,15,20,$
0.5,0.125,0.25,0.375,0.5,1,1,1,1,1,1,$