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Ansys Learning Forum › Forums › Installation and Licensing › Ansys Products › Fatigue Analysis Kf Value › Reply To: Fatigue Analysis Kf Value

May 20, 2024 at 2:04 pm
Daniel Shaw
Ansys Employee

Kf is just a general modification factor (always equal to or less than 1.0) used to reduce the fatigue resistance.  For example, the test specimens used to develop the S-N curve are typically polished, but the actual material might have a rough surface finish.  Kf can be used include the surface finish effect.