Defining global damping for LS-DYNA solutions

Use the Damping modeling object to define mass-weighted nodal damping that applies:

• Globally, to the nodes of deformable bodies.

• To the center of mass of rigid bodies.

You can use the options in the Damping dialog box to globally damp low frequency structural modes as well as rigid body modes. For example, you can use options to:

• Select a table-based field to define the loading curve that defines the system damping constant.

• Specify scaling factors on the global X, Y, and Z translational and rotational damping forces.

After you create a Damping type of modeling object, you can then use the options on the Damping tab in the Solution dialog box to specify which Damping modeling object to include in the solution.

The options in the Damping dialog box correspond to the LS-DYNA *DAMPING_GLOBAL keyword.

Where do I find it?

Application	Pre/Post
Prerequisite	An active FEM or Simulation file with LS-DYNA as the specified solver
Command Finder	Modeling Objects
Menu	Insert→Modeling Objects

Learn more

LS-DYNA environment

Defining solution options and output requests for LS-DYNA

Defining XY data for LS-DYNA solutions

Customizing LS-DYNA input files with user defined text

Previewing LS-DYNA solver syntax

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LS-DYNA boundary conditions

Controlling ID values assigned during export (LS-DYNA)

LS-DYNA keywords supported for import and export

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Defining global damping for LS-DYNA solutions, Simcenter 3D 2021.1 Series

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