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Been diving deep into the theoretical side of gear dynamics and vibration analysis lately, and I'm finding it fascinating how much the underlying math dictates real-world performance. Specifically, I'm curious about peopel's experience with diffrent models for gear mesh stiffness. Are there situations where you've found a simplified linear model to be sufficient, or have you consistently needed to incorporate more complex, non-linear effects like tooth profile deviations or load-dependent stiffness?
I'm also trying to wrap my head around the best approaches for modeling damping in gear systems. It seems like there are so many factors at play (lubrication,material damping,contact damping at the mesh) that accurately capturing it in a simulation can be a real challenge. Has anyone had success with particular damping models or techniques for parameter identification? I'm particularly interested in seeing how people have handled damping in systems with significant backlash.
has anyone used vibration analysis as a tool for proactively identifying gear faults early, based on subtle changes in the frequency spectrum, rather than after a failure has already occurred? What specific indicators or frequency components have you found to be most reliable for detecting things like pitting or spalling in their nascent stages?