Rayleigh's Damping dialog box

Option	Description
Damping Method	Formula allows you to define constant values for stiffness and mass to use in the damping formula. The formula used is [C] = Alpha[k] + Beta[m]. Range allows you to define a modal viscous damping factor to be applied across the range of frequencies of your normal modes.
Alpha	Available when Damping Method is Formula.Enter a constant value for stiffness to be applied in the damping formula.
Beta	Available when Damping Method is Formula.Enter a constant value for mass to be applied in the damping formula.
Frequency (Lowest-Highest)	Available when Damping Method is Range.Enter the lowest and highest frequency in the range of modal frequencies to which to apply the viscous damping factor.
Damping Factor (Lowest-Highest)	Available when Damping Method is Range.Enter the percentage of viscous damping to apply at the lowest and highest frequencies in the range.

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Rayleigh's Damping dialog box, Simcenter 3D 2021.1 Series

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