A new loads and boundary conditions set will be created.

The available types of structural sets include:

Sets are ultimately associated with either nodes (Nodal) or elements. Sets can be associated with the element itself (Element Uniform) or the element’s nodes (Element Variable).

The analysis type is Structural. The form changes if an alternative analysis type is selected.

The set will be assigned to this Current Load Case named “Default.” To change, select this button and make a new selection in the form that appears. Time‑dependent sets require a time dependent load case.

The names of all sets of the type selected are displayed here. Selecting one retrieves it from the database.

Each new set requires a unique name (31 characters maximum, no spaces).

For element associated sets, select the element type (1D, 2D, or 3D). If more than one type, create different sets for each. Not used for Nodal types.

Select this box to bring up the Input Data form containing the appropriate variables for the set type selected.

Select this box to bring up forms for selecting the entities to which this set applies. Standard selection methods are used.

This tool is available for creating Pressures only when the application region is FEM. This is a tool that you can use to select connected free faces of solid elements by selecting a single reference free face and specifying an angle range such that all adjacent free faces with normals within this range relative to the normal of the reference element are selected. By pressing the Overwrite button on this subordinate form, the selected element faces will be overwritten from any previous query. If the Append button is pressed, than faces from additional queries are added to previous queries. When the form is canceled, the list of faces selected from this tool appear in the select databox on the main form for selecting an application region. Simply add the element faces to the application region and create the pressure LBC.

Here are a couple of examples of picking you can do with this tool:

Preference Guides

Application Modules

 

A new loads and boundary conditions set will be created.

*Denotes Patran Thermal only.

Sets are ultimately associated with either nodes (Nodal) or elements. With elements, they can be associated with the element itself or the element’s nodes (Element Uniform or Element Variable).

The analysis type is Thermal. The form changes if an alternative analysis type is selected.

The set will be assigned to this Current Load Case named “Default.” To change, select this databox and make a new selection in the form that appears. Time dependent sets require a time-dependent Load Case. (Note: Not applicable to Patran Thermal.)

The names of all sets of the type selected are displayed here. Selecting one retrieves it from the database.

Each new set requires a unique name (31 characters maximum, no spaces).

For element associated sets, select the element type (1D, 2D, or 3D). If more than one type, create different sets for each. Not used for Nodal types.

Select this box to bring up the Input Data form containing the appropriate variables for the set type selected.

Select this box to bring up forms for selecting the entities to which this set applies. Standard selection methods are used.

Preference Guides

Application Modules

 

A new loads and boundary conditions set will be created.

The available types of Fluid Dynamics sets include:

Sets are ultimately associated with either nodes (Nodal) or elements. With elements, they can be associated with the element itself or the element’s nodes (Element Uniform or Element Variable).

The analysis type is Thermal. The form changes if an alternative analysis type is selected.

The set will be assigned to this Current Load Case named “Default.” To change, select this box and make a new selection in the form that appears. Time-dependent sets require a time-dependent Load Case.

The names of all sets of the type selected are displayed here. Selecting one retrieves it from the database.

Each new set requires a unique name (31 characters maximum, no spaces).

For element associated sets, select the element type (1D, 2D, or 3D). If more than one type, create different sets for each. Not used for Nodal types.

Select this box to bring up the Input Data form containing the appropriate variables for the set type selected.

Select this box to bring up forms for selecting the entities to which this set applies. Standard selection methods are used.

Preference Guides

Application Modules

 

All loads and boundary conditions data variables are multiplied by this Scale Factor. The default value is 1.0.

All parameters appropriate to the Analysis Type and Loads/BCs type selected appear as input databoxes. The following rules apply to data entry in these databoxes:

A blank (no entry) is considered a null, or no input, which is the same as zero, except for displacement (including initial displacements) type sets. A zero value for a displacement means that the displacement component in that direction is constrained. A null value indicates that the nodes are free to move. Null values can be indicated by “,,” (e.g., “10 ,, 4”).

This button will display a Discrete FEM Fields input form to allow field creation and modification within the loads/bcs application. Available only when focus is set in a databox which can have a DFEM field reference. See Spatial Discrete FEM Field Access by Other Applications, 260.

This is the default coordinate frame specified in Preferences. Select this databox if a different one is applicable to this set.

All data in this set are multiplied by this Scale Factor. The default value is 1.0.

Time dependence must be defined as a field. First, select an input box and then a field name from the list below.

All parameters appropriate to the Analysis Type and Loads/BCs type selected appear as input databoxes.

Time dependence must be defined as a field. First, select an input box and then a field name from the list below.

Displays a Discrete FEM Fields input form to allow field creation and modification within the loads/bcs application. Available only when focus is set in a databox which can have a DFEM field reference. See Spatial Discrete FEM Field Access by Other Applications, 260.

This is the default coordinate frame specified in Preferences. Select this databox if a different one is applicable to this set.

If the user has multiple load cases, the filter feature can be used to list only those Load Cases which match the text shown in the databox to its left.

Select the Load Case which is to be the Current Load Case. The change will be reflected in the main form on exit.

Loads and boundary conditions sets can be associated either directly with FEM entities or with geometric entities.

Sets applied to geometry can be displayed on the associated FEM model by turning on the “Display on FEM Only” toggle on the Display/Functional Assignments form (see Display>LBC/Element Property Attributes (p. 393) in the Patran Reference Manual) and executing either the Plot Markers or Plot Contours action.

Focus is automatically set to this databox. In the instances where more than one type entity is valid, a separate selection icon menu appears indicating the type of entity to be selected (e.g., curve or surface). Use standard selection tools to select the desired entity or group of entities. The entity types and IDs of selected items appear in this databox.

Removes selected entities (those appearing in the Select Nodes databox) from the Application Region.

When the selected entities are correct, select the Add button. The selected entities appear in the Application Region listbox.

Select Modify.

The set will be assigned to this Current Load Case. To change, select this button and make a new selection in the form that appears. The set will also remain in the original load case. Time dependent sets require a time-dependent load case.

Select the set to be modified.

Rename the set here.

For element associated sets, the element type (1D, 2D, or 3D) associativity can be changed. If this is done, however, remove the old types from the application region and add the new types.

Select this box to bring up the Input Data form. Make changes to the set data as required.

Select this box to bring up a form for changing the entities to which this set applies. Standard selection methods are used.

Select Delete.

Select the type of the loads and boundary conditions set that is to be deleted. The list of options depends on the analysis type selected.

Select the Analysis Type. The options available are a function of analysis code.

All sets of the type selected will appear in this databox. Select those to be deleted. Selected sets appear in the listbox below.

Selected sets appear in this databox. They can be removed from this delete list by selecting them.

Select Show Tabular.

Select the type of the loads and boundary conditions set that is to be displayed

Select the Analysis Type. The options available are a function of analysis code.

To change the Current Load Case, select this databox and make a new selection in the listbox that appears. The set will also remain in the original Load Case.

All sets of the type selected will appear in this databox. Select the one to be shown.

Column1 is the entity type, its ID number and its Sub ID. All entities are the same type in a set.

This Scale Factor multiplies all data values in this row.

Select Plot Contours.

Select the type of the loads and boundary conditions set that is to be displayed.

Verify that this is the Analysis Type being performed.

This is the Current Load Case. To change, select this box and make a new selection in the submenu that appears.

All sets in the Current Load Case appear in this listbox. Contours for all Loads/BCs sets in the Current Load Case with the selected data variable are plotted.

Select the variable data to display on the model.

If the data is a vector, either the magnitude of the resultant or a component may be selected with this menu.

If the Current Load Case is Time Dependent then you may specify the time at which the loads and boundary conditions set contours will be evaluated.

This area of the form permits contour display control by groups. Selecting All Groups causes contours to be displayed in all groups. Selecting Current Viewport provides contour display only on those groups in the Select Groups listbox. At least one group must be selected.

See Display Attributes (p. 6) in the Results Postprocessing.

Select this databox to remove the contour plot and restore the original model display.

The action will be either to remove (or reinstate) load and boundary conditions markers from the display.

This toggle allows vector Loads/BCs quantities currently displayed to be displayed in a different coordinate system.

This is the Current Load Case. To change the current load case, select this box and make a new selection in the listbox that appears.

These load and boundary conditions sets are assigned to the Current Load Case. Select the ones you wish to act on. They will be highlighted. Click a second time to deselect. Only Load/BCs in the Current Load Case can be displayed with this form.

This area of the form permits marker display control by groups. Selecting All Groups provides a filter list of all groups available in the model. Selecting Current Viewport provides a filter list of only those groups in the current viewport.

The Loads/BCs vector display will be restored to its original orientation whenever: (1) a new Loads/BCs set is created, (2) a Load/BCs set is modified, (3) a Loads/BCs set is deleted or (4) the database is closed.

Selecting the Use Existing switch will allow the user to select an existing coordinate frame in the Select Coord Frame selectdatabox. This is the coordinate frame in which selected vectors will be displayed.

Selecting the Entities switch allows the user to select geometric and/or FEM entities on which the vector display is to be modified. Selecting the Vector Load/BCs Sets allows the user to display all the currently displayed Load/BCs set vectors in the selected coordinate frame.

The Define Local option allows the user to modify vector display on nodes.

The Nodes selectdatabox allows the user to select the nodes on which the vector display will be modified. These nodes are also the used as the origin of the coordinate system.

Nodes on the 1-Axis define the orientation of the 1-axis. If this list is empty the nodes Nodes list are paired sequentially to define the 1-Axis. The last node in the Nodes list is used for orientation only. If this list is not empty then the nodes in this list are paired with the nodes in the Nodes list. If there are more nodes in the Nodes list than in this list, the last node in the Nodes on 1-Axis is paired with the remaining Nodes list nodes.

Vectors in 1-2 plane define the orientation of the 1-2 plane. One or more vectors can be used to define the 1-2 plane. If there are more nodes in Nodes list than in this list then the last vector will be used for the remaining nodes. If there are more vectors that nodes then the remaining vectors in this list are ignored.