Extended modules > Creo Elements/Direct Finite Element Analysis > Apply loads and boundary conditions > Enforced displacements
  
Enforced displacements
Enforced displacement is the specification that a vertex, edge, or face on your design model or a portion of the model be required to move a specified distance (other than zero) along specific axes.
Enforced displacements can be set using the Enfcd Displ dialog box. The dialog box lets you select the location for the enforced restraint: a vertex, an edge, or over a face.
Choosing the location for the enforced displacement opens a Displacement or Rot.Displacement dialog box where you enter the specific reference location on your model where the enforced displacement should be applied. You are also asked to set the displacement value along each of the three reference axes and the direction for the displacement relative to the coordinate system.
By selecting Next, you can set enforced displacements at other locations of the same type (for example, over a second face). To fix an enforced displacement on another location type (such as, to apply an additional enforced displacement on an edge after applying an enforced displacement to a particular vertex) select another location type from the button menu and then set the values in the new edit box which is displayed.
To set enforced displacements on a vertex,
1. Click FEA and then, in the Mechanical LBC group, click Enfcd Displ. The Enfcd Displ dialog box opens.
2. Click Vertex in the Enfcd Displ dialog box.
The Displacement dialog opens.
3. If necessary, give the study a name.
When no name has been earlier provided, you can click Study in the Displacement dialog box and enter a new one in the highlighted field.
4. Click Name. Creo Elements/Direct Finite Element Analysis displays a suggested name for the current displacement in the Name box. You can accept the proposed name or type a new one in the highlighted box.
5. Using the mouse, click at the vertex on your design model where you want to apply the enforced displacement.
While in Select mode you can use the viewport controls to adjust the display and optimize the view of the desired part.
Creo Elements/Direct Finite Element Analysis displays the word "defined" in the Ref Vertex box when you have made your selection.
6. Click Direction in the Displacement dialog box.
The 3D CoPilot is displayed.
Set directions using the 3D CoPilot,
or
enter a Displacement value directly into the appropriate axis box in the Displacement dialog box.
7. Next allows you to remain in the menu and define additional enforced displacements on vertices.
8. Click to validate your choices and apply the enforced displacement.
To set enforced displacements on an edge,
1. Click FEA and then, in the Mechanical LBC group, click Enfcd Displ. The Enfcd Displ dialog box opens.
2. Click Edge in the Enfcd Displ dialog box.
The Displacement dialog box opens.
3. If necessary, give the study a name.
When no name has been earlier provided, you can click Study in the Displacement dialog box and enter a new one in the highlighted field.
4. Click Name. Creo Elements/Direct Finite Element Analysis displays a suggested name for the current displacement in the Name box. You can accept the proposed name or type a new one in the highlighted box.
5. Using the mouse, click the edge on your design model where you want to apply the enforced displacement.
While in Select mode you can use the viewport controls to adjust the display and optimize the view of the desired part.
Creo Elements/Direct Finite Element Analysis displays the word "defined" in the Ref Edge box when you have made your selection.
6. Click Direction in the Displacement dialog box.
The 3D CoPilot is displayed.
Set directions using the 3D CoPilot dialog box,
or
enter a Displacement value directly into the appropriate axis box in the Displacement dialog box.
7. Next allows you to remain in the menu and define additional enforced displacements on edges.
8. Click to validate your choices and apply the enforced displacement.
To set enforced displacements on a face,
1. Click FEA and then, in the Mechanical LBC group, click Enfcd Displ. The Enfcd Displ dialog box opens.
2. Click Face in the Enfcd Displ dialog box.
The Displacement dialog box opens.
3. If necessary, give the study a name.
When no name has been earlier provided, you can click Study in the Displacement dialog box and enter a new one in the highlighted field.
4. Click Name. Creo Elements/Direct Finite Element Analysis displays a suggested name for the current displacement in the Name box. You can accept the proposed name or type a new one in the highlighted box.
5. Using the mouse, click the face on your design model where you want to apply the enforced displacement.
While in Select mode you can use the viewport controls to adjust the display and optimize the view of the desired part.
Creo Elements/Direct Finite Element Analysis displays the word "defined" in the Ref Face box when you have made your selection.
6. Click Direction in the Displacement dialog box.
The 3D CoPilot is displayed.
Set directions using the 3D CoPilot,
or
enter a Displacement value directly into the appropriate axis box in the Displacement dialog box.
7. Next allows you to remain in the menu and define additional enforced displacements for faces.
8. Click to validate your choices and apply the enforced displacement.
To modify an enforced displacement on a vertex,
1. Click Modify and then, in the LBC group, click Modify.
2. Click the symbol for the enforced displacement on the vertex on your design model that you want to modify. (You can also use the Structure Browser for this task.)
While in Select mode you can use the viewport controls to adjust the display and optimize the view of the design.
Once selected the Modify Displ dialog box opens.
3. Make any desired changes to the parameters in the displayed fields.
4. Click to validate your modifications and reapply the enforced displacement with the revised parameters.
To modify an enforced displacement, on an edge,
1. Click Modify and then, in the LBC group, click Modify.
2. Click the symbol for the enforced displacement on the edge in your design model that you want to modify. (You can also use the Structure Browser for this task.)
While in Select mode you can use the viewport controls to adjust the display and optimize the view of the design.
Once selected the Modify Displ dialog box opens.
3. Make any desired changes to the parameters in the displayed fields.
4. Click to validate your modifications and reapply the enforced displacement with the revised parameters.
To modify an enforced displacement on a face,
1. Click Modify and then, in the LBC group, click Modify.
2. Click the symbol for the enforced displacement on the face in your design model that you want to modify. (You can also use the Structure Browser for this task.)
While in Select mode you can use the viewport controls to adjust the display and optimize the view of the design.
Once selected the Modify Displ dialog box opens.
3. Make any desired changes to the parameters in the displayed fields.
4. Click to validate your modifications and reapply the enforced displacement with the revised parameters.