XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX''"> Setting Up the Analysis
Different analysis codes, types, and solution types support different sets of element shapes, nodal configurations, material properties, element properties, and loads and boundary conditions. When you start your model database and select an analysis code, the Patran application forms will only allow you to select options supported by that code. You may switch between analysis codes, but this will require you to redefine many portions of your model.
The Analysis Application Form
Once you have finished building your finite element model, use the Analysis application form to define and initiate the analysis.
To use the Analysis Application form:
1. Select the Analysis button on the Patran Main form.
The Analysis application form appears in your viewport.
2. Select an Action, Object, and Method from the top of the application form.
3. Check the analysis code and analysis type.
The currently selected analysis code and type appear near the top of the form for informational purposes. To change these selections, display, then modify the Analysis Preferences form by choosing Preferences/Analysis from the Patran Main menu.
Actions
The available selections for Action depend on the analysis code selected. Typically they include Analyze, Read Results, and Read Input. For the purposes of setting up your analysis, the action you select will be limited only to Analyze.
Objects
The object you select defines what part of the model to include in the analysis--Entire Model or Current Group. In most cases Entire Model will be your choice.
Methods
The Method you select defines how far the analysis will go. Settings include Full Run, Check Run, Analysis Deck, and Model Only. If you select Full Run, any required forward translation is done, then the analysis solver is invoked to run the problem.
Sample MSC Nastran Analysis Application Form
For Application Modules, the Analyze action causes the model to be submitted directly for analysis. For Application Preferences, Analyze causes the forward translator to create an input deck that you may then submit for analysis. The following sample form initiates a MSC Nastran analysis.
Sample Analysis Application form
The sample forms shown here are for an MSC Nastran structural analysis on the entire model.
Available Jobs | Lists all jobnames currently defined for the selected analysis code. |
Jobname | Defines the name to be attached to all files associated with this particular analysis run. |
Job Description | Specifies the title to be used in the analysis run for the currently selected job. |
Translation Parameters | Displays the Translation Parameters form to specify information required to create an input deck for an application preference. |
Solution Type | Displays the form to select a Solution Type. |
Direct Text Input | Displays a form to define parameters for inputting a Bulk Data deck. |
Subcase Create | Displays a form to create specific subcases for the analysis. |
Subcase Select | Displays the Subcase Select form to activate or deactivate different subcases. |
Sample MSC Nastran Solution Type Subform
Selecting the Solution Type unfold box on the Analysis application form brings up the Solution Type subform shown below. Use this form to define the type of analysis solution for the analysis.
