Simcenter Nastran dynamics workflow

The following steps summarize the overall process you should follow to create and solve a Simcenter Nastran dynamic solution.

Step	Summary	Detailed help topic
1. Build the finite element (FE) model.	In the Pre/Post application, define the geometry, material properties, mesh, and constraints, as you would for other structural solution types.
2. Create the Simcenter Nastran solution.	Create a Simcenter Nastran Dynamic solution. The solution types are:SOL 108 Direct Frequency ResponseSOL 109 Direct Transient ResponseSOL 111 Modal Frequency ResponseSOL 112 Modal Transient ResponseSOL 129 Nonlinear Transient ResponseSOL 401 Multi-Step NonlinearSOL 402 Multi-Step Nonlinear Kinematics	Create or modify a solutionBasic Dynamic Analysis User’s Guide links:SOL 108SOL 109SOL 111SOL 112
3. Edit the Solution	At the Solution level, you can modify the default output request. If your solution is a modal response type (SOL 111 or SOL 112), select the eigenvalue method, along with the eigenvalue options such as the number of modes and a frequency range.	Create or modify a solution
4. Edit the Subcase	If you are running a frequency response solution (SOL 108 or SOL 111), define the solution frequencies at the subcase level. Simcenter Nastran computes and stores the response output at these frequencies.If you are running a transient response solution (SOL 109 or SOL 112), define the solution time steps at the subcase level. Simcenter Nastran computes and stores the response output at these time steps.(Optional) Define modal damping for the solution types SOL 111 and SOL 112 at the subcase level.	Create or modify a solution step or subcaseBasic Dynamic Analysis User’s Guide links:Damping for SOL 108Damping for SOL 109Damping for SOL 111Viscous Damping and Structural Damping for SOL 112.
5. Create a dynamic excitation	Use fields in Pre/Post to create any boundary condition that varies with frequency or time. Frequency response solution (SOL 108 or SOL 111): Excitation is frequency dependent.Transient response solution (SOL 109, SOL 112, SOL 129, SOL 401, or SOL 402): Excitation is time dependent.Create enforced displacement, velocity, or acceleration excitations. These commands are located on the Home tab→Loads and Conditions group.Create force and pressure excitations. These commands are located on the Home tab→Loads and Conditions group.	Define a boundary condition using a table field
6. Solve the model	The Simcenter Nastran .f06 output file contains information about the status of your solution. To find this file, right-click the solution and select Browse.	Solve the model
7. Graph results	You can create an XY graph of your Simcenter Nastran SORT2 results in the Post-Processing Navigator or in the XY Function Navigator.	GraphsPlot functions

How do I

Reduce response errors with residual vectors

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Dynamic analysis

Specifying forcing frequencies for a frequency response analysis

Assigning frequencies from all loads to subcases

Limiting frequency response output to peak responses

Defining eigenvalue extraction data for Nastran analyses

Residual vector loads in a SOL 103 Real Eigenvalue solution

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Simcenter Nastran dynamics workflow, Simcenter 3D 2021.1 Series

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