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Autodesk Inventor Nastran 2025
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    R4020

    R4020 WARNING: R4020 UNABLE TO DETERMINE STRAIN-LIFE FOR elemtype ELEM id
    Cause: Unable to accurately determine strain-life for the element specified.
    Action: Check the input data on the associated FATIGUE, VFATIGUE, SNDATA, or ENDATA Bulk Data entry.
    Remarks: None.
    Parent topic: Results Processor Error Messages

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