Simcenter 3D Laminate Dynamics

Use the Simcenter 3D Laminate Dynamics solution process to generate ply results for a base-driven random or sine vibration event. You can also run these events from the command line.

The software returns peak results for sine and random events, and at specified excitation frequencies for sine events. To evaluate the behavior of a laminate subjected to a random or harmonic excitation, you can request the following:

• Ply stresses, strains, failure indices, strength ratios, and margins of safety. The software automatically computes ply Von Mises stress and strain. You can also request ply maximum shear stress and strain for 2D elements, and ply minimum and maximum principal stress and strain for all element types.

• Nodal responses for acceleration, displacement, velocity, multipoint constraint (MPC) force, single-point constraint (SPC) force, and grid point force. The software automatically computes both translational and rotational magnitudes for these quantities.

• Elemental responses for stress, strain, and force. The software automatically computes Von Mises stress and strain. You can also request maximum shear stress and strain for 2D elements, and minimum and maximum principal stress and strain for all element types.

• Von Mises stresses, failure indices, and margins of safety for elements that reference a homogeneous material.

For random events, you can also request the following:

• Number of positive zero crossings for acceleration, displacement, velocity, multipoint constraint (MPC) force, and single-point constraint (SPC) force.

• Number of positive zero crossings for stress, strain, force, ply stress, and ply strain.

The Laminate Dynamics solution process can also generate the following XY Functions for the results described above, except ply results and grid point forces.

• Power spectral density functions for random events.

• Frequency response functions for sine events.

Frequency response of acceleration for a sine event

The Laminate Dynamics solution process references a Nastran SOL 103 Real Eigenvalues solution from which it reads the following data:

• Modal data: eigenvalues, eigenvectors, and modal participation factors.

• Failure data: ply failure theories and material stress and strain limits.

• Failure data: ultimate strengths or yield strengths for homogeneous materials.

The software uses advanced integration algorithms to produce the specified output and implements multithreading to speed up solution time.

Where do I find it?

Application	Pre/Post
Prerequisite	Simcenter Nastran SOL 103 Real Eigenvalues solution with Solution Process set to Laminate Dynamics
Command Finder	Dynamic Simulation
Simulation Navigator	Right-click the Simulation file node→New Solution Process→Laminate Dynamics

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

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

Damping definition

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

Browse Simcenter 3D help by product area

Simcenter 3D Laminate Dynamics, Simcenter 3D 2021.1 Series

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