Damping definition

Although there are various ways to define damping in your Nastran model, the laminate dynamics solver uses solely the modal viscous damping defined in the Laminate Dynamics Details View subpanel and ignores all other damping definitions. For instance, the following damping definitions are ignored:

• Structural damping GE defined on the PCOMP/PCOMPG/PCOMPS laminate physical properties

• Structural damping defined on the GE field of all material cards and CELAS2 elements

• Structural damping defined on the GE1 and GE2 fields of the PELAS physical properties

• Structural damping GEi and viscous damping Bi defined on the PBUSH physical properties

• Viscous damping defined using CVISC and CDAMPi elements

How do I

Laminate Dynamics workflow

Create a dynamic simulation

Filter modes with small modal effective mass

Modify normal mode settings

Create a random event

Create a sine event

Solve the dynamic simulation

Learn more

Simcenter 3D Laminate Dynamics

Random Event

Sine Event

Look up more details

Simulation Navigator for Dynamic Simulation

Right-click commands for Dynamic Simulation

Laminate random results

Laminate sine results

Laminate Dynamics Details View subpanel (Simulation Navigator)

Supported elements

Modal truncation effects

Dynamic simulation output files

Confidence level in peak results computation

Supported failure theories

Running a Laminate Dynamics solution process from a command line

Quick links

Command reference

Pre/Post video examples

Bulk Entry Descriptions

Simcenter 3D tutorials

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Damping definition, Simcenter 3D 2021.1 Series

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