Fatigue User’s Guide > Limitations and Error Messages > Program Limitations
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Program Limitations
The following table contains MSC.Fatigue program limitations. Changes in these values are distributed to all customers as update pages to this guide and are contained in the MSC.Patran Technical bulletins.
 
Number of data values in a time history
No limit*
Number of load types
99
Number of load units
999
Number of material types
100
(The same material with two different surface conditions is counted as two different materials - 300 materials are possible with spot weld analysis however only 100 combinations are possible since three materials must be defined for each spot weld grouping)
 
Number of load cases for strain-life
200
Number of load cases for stress-life
200
Number of load cases for crack growth
200
Number of load cases for spot weld analysis
200
Number of input PSDs for vibration fatigue
20
Number of Frequency Steps per Loading PSD
8192
Number of nodes/elements
No limit*
Number of time steps for transient analysis
No limit*
* Limited only by disk space, memory and swap space.