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Ansys Learning Forum Forums Discuss Simulation General Mechanical ANSYS Random Vibration R-Ratios Reply To: ANSYS Random Vibration R-Ratios

danielshaw
Ansys Employee

The concept of R-Ratio is not applicable to random vibration loading.  You are not cycling the a load between values.  Yes, a fatigue analysis for harmonic loading would typically assume that the sinusodial loading is centered about zero. That assumption is built into the Mechanical Fatigue Tool.

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