XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX''"> Specifying Model Parameters
It is important to select the Analysis Code, Analysis Type, and Global Model Tolerance before you begin building your analysis model. Your choices for Analysis Code and Type affect code-specific forms as well as the options available for element types, element properties, and material definitions. Your choice for the Global Model Tolerance impacts how you construct your model. You may specify these three items using the New Model Preferences form.
Global Model Tolerance Definition
The Global Model Tolerance sets a minimum distance between separate points, curves, surfaces, and solids. If you try to create two entities, such as points within the global model tolerance distance from each other, Patran sees these two entities as one and you will not be able to create the second. This setting ensures that your geometric model will mesh properly and maintain congruency
To set the Global Model Tolerance:
1. On the New Model Preferences form, choose which method you will use to define the Global Model Tolerance value.
Choosing Default assigns a default value to the Global Model Tolerance. This value is initially set at .005 inches. (You can change the default value by selecting Preferences/Global on the Main menu). If you select Based on Model, the Tolerance value is defined as .05% of the Maximum model dimension.
Analysis Code and Analysis Type
The New Model Preferences form automatically appears when you complete the New Database form. (If you do not see this form on your screen, check on the New Database form to make sure that the Modify Preferences toggle button set to ON.
To specify the analysis code and analysis type:
1. Select one of the analysis codes from the Analysis Code drop-down menu.
You should see a list of the analysis codes available at your site.
2. Use the Analysis Type drop-down menu to assign the type of analysis.
You can select a structural, thermal, or fluid dynamics analysis. This selection needs to match the capabilities of the analysis code you selected.
Global Model Tolerance | Two points in the model will be coincident if they are separated by a distance equal to or less than the Global Model Tolerance.There are two options for setting the tolerance. |
Based on Model | Calculates the tolerance as.05% of the Approximate Maximum Model Dimension. |
Default | Uses the setting defined in the template database, normally.005. |
Analysis Code | Select the Analysis Code from the options installed at your site. |
Analysis Type | The Analysis Type depends on the Analysis Code you select. It can be Structural, Thermal or Fluid Dynamics. |
