FEM ConstraintForce: Difference between revisions

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{{GuiCommand
{{GuiCommand
|Name=FEM ConstraintForce
|Name=FEM ConstraintForce
|MenuLocation=Model → Mechanical ConstraintsConstraint force
|MenuLocation=Model → Mechanical boundary conditions and loadsForce load
|Workbenches=[[FEM_Workbench|FEM]]
|Workbenches=[[FEM_Workbench|FEM]]
|SeeAlso=[[FEM_ConstraintPressure|FEM ConstraintPressure]]
|SeeAlso=[[FEM_ConstraintPressure|FEM ConstraintPressure]]
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# There are several ways to invoke the command to apply a force to a face, line or point:
# There are several ways to invoke the command:
#* Click on {{Button|[[Image:FEM_ConstraintForce.svg|16px]] [[FEM ConstraintForce|FEM Constraint force]]}} button
#* Press the {{Button|[[Image:FEM_ConstraintForce.svg|16px]] [[FEM ConstraintForce|Force load]]}} button
#* Select the {{MenuCommand|Model → Mechanical Constraints → [[Image:FEM ConstraintForce.svg|16px]] Constraint force}} option from the menu.
#* Select the {{MenuCommand|Model → Mechanical boundary conditions and loads → [[Image:FEM ConstraintForce.svg|16px]] Force load}} option from the menu.
# The Mesh object will be hidden automatically and reveal the original model. If the Mesh object is still visible, do one of the following to hide it:
# If you have Mesh displayed, you need to hide it (select the mesh object and press {{Button|spacebar}} or right-click and select {{Button|Hide item}}) and show the original model.
#* Select the Mesh object in the [[Tree_view|Tree view]] and press {{KEY|spacebar}}.
# Click on a ''face'', ''line'' or ''point'' to which a force should be applied. The object will appear in the list of geometrical objects.
#* Right-click on the Mesh object in the [[Tree_view|Tree view]] and select {{MenuCommand|Hide selection}} from its context menu.
# Fill in {{Button|Load [N]}} with a force value in [N].
# The {{MenuCommand|Analysis feature parameters}} dialog in the [[Task_panel|Task panel]] has also been opened.
# {{Button|Direction}}: In a typical case, you'll leave this field empty to apply a force in the normal direction. You can revert the direction of the force by clicking {{Button|Reverse direction}}. In other cases, you need to pick a face/plane or edge, which serves as reference for force direction.
# Press the {{Button|Add}} button and select one or more of either ''faces'', ''edges'' or ''vertices'' in the [[3D_view|3D view]] to apply the force to. The selected items will appear in the list of geometrical objects.
# Click {{Button|OK}} to finish and create the {{KEY|[[File:FEM_ConstraintForce.svg|24px]] ConstraintForce}} object.
# Optionally press the {{Button|Remove}} button and deselect one or more of the selected items in the [[3D_view|3D view]]. The deselected items will be removed from the list of geometrical objects.
# Optionally edit the {{MenuCommand|Load [N]}} value.
# Optionally select a face or an edge and press the {{Button|Direction}} button to change the force direction. In a typical case, you'll leave this field empty to apply the force in the normal direction.
# Optionally check the {{MenuCommand|Reverse direction}} checkbox to reverse the force direction.
# Click {{Button|OK}} to finish.


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* The defined force is applied uniformly to the selected objects. For example, if you define one force constraint with 200 N applied to two faces having the same area, each face will be uniformly loaded with 100 N.
* The defined force is applied uniformly to the selected objects. For example, if you define one force load with 200 N applied to two faces having the same area, each face will be uniformly loaded with 100 N.
* This feature uses the [https://web.mit.edu/calculix_v2.7/CalculiX/ccx_2.7/doc/ccx/node172.html *CLOAD card in CalculiX].





Latest revision as of 08:47, 27 January 2024

FEM ConstraintForce

Menu location
Model → Mechanical boundary conditions and loads → Force load
Workbenches
FEM
Default shortcut
None
Introduced in version
-
See also
FEM ConstraintPressure

Description

Applies a force of a given value [N] to the selected geometry.

Usage

  1. There are several ways to invoke the command:
    • Press the Force load button
    • Select the Model → Mechanical boundary conditions and loads → Force load option from the menu.
  2. The Mesh object will be hidden automatically and reveal the original model. If the Mesh object is still visible, do one of the following to hide it:
    • Select the Mesh object in the Tree view and press spacebar.
    • Right-click on the Mesh object in the Tree view and select Hide selection from its context menu.
  3. The Analysis feature parameters dialog in the Task panel has also been opened.
  4. Press the Add button and select one or more of either faces, edges or vertices in the 3D view to apply the force to. The selected items will appear in the list of geometrical objects.
  5. Optionally press the Remove button and deselect one or more of the selected items in the 3D view. The deselected items will be removed from the list of geometrical objects.
  6. Optionally edit the Load [N] value.
  7. Optionally select a face or an edge and press the Direction button to change the force direction. In a typical case, you'll leave this field empty to apply the force in the normal direction.
  8. Optionally check the Reverse direction checkbox to reverse the force direction.
  9. Click OK to finish.

Notes

  • The defined force is applied uniformly to the selected objects. For example, if you define one force load with 200 N applied to two faces having the same area, each face will be uniformly loaded with 100 N.
  • This feature uses the *CLOAD card in CalculiX.