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JimLin
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I would like to discuss different ways of creating the Campbell Diagram (from FEA results) used in dynamics. If you have frequency at bench (70F and zero speed) and frequency at the max speed (with temperature), you can either connect these two points directly by a straight line, or you can also use formula with second order ( f = a + b * w^2) or a square root of sum of square. Anyone wants to share experience ?