Modal Damping dialog box (Abaqus)

Properties
Description	Lets you specify an optional description for the modeling object.
Modal Damping Parameters
Modal Damping Method	Specifies the modal damping method.ViscousSpecifies that the damping is viscous.StructuralSpecifies that the damping is structural. This means that the damping is proportional to the internal forces but opposite in direction to the velocity.Defined in Data LinesLets you specify a range of mode numbers in a field to define the damping.
Viscous Damping Type	Available if Modal Damping Method is set to Viscous.Fraction of Critical DampingDefines damping as a fraction of critical damping by specifying mode numbers.CompositeSpecifies composite modal damping using the damping coefficients that were calculated during a Frequency Perturbation type step. RayleighIndicates that the damping for a particular mode is defined as αM**μM+ βMKM, where αM and βM are factors defined in the specified field, μM is the modal mass, and KM is the modal stiffness for mode M.
Specify Damping Values By	Controls how the damping value are defined.Mode NumbersIndicates that the damping values are given for the specified mode numbers. Use the Viscous Damping Fraction by Mode Numbers Range option to select the field that defines the damping values for the mode numbers.Frequency RangeIndicates that the damping values are given for specified frequency ranges. The frequency ranges can be discontinuous. Use the Viscous Damping Fraction by Frequency Range option to select the field that defines the damping values for the frequency ranges.
Viscous Damping Fraction by Mode Numbers Range/Viscous Damping Fraction by Frequency Range	Available if Modal Damping Method is set to Viscous.Lets you select the field that defines the damping values for the specified mode numbers or frequency ranges.

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Solution Step dialog box (Abaqus), Other Step Parameters page

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Modal Damping dialog box (Abaqus), Simcenter 3D 2021.1 Series

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