FEM ConstraintFixed: Difference between revisions

From FreeCAD Documentation
m (Change section to 'Usage')
(Marked this version for translation)
 
(25 intermediate revisions by 6 users not shown)
Line 2: Line 2:
<translate>
<translate>
<!--T:9-->
<!--T:9-->
{{Docnav
{{Docnav|[[FEM_ConstraintFlowVelocity|Constraint flow velocity]]|[[FEM_ConstraintDisplacement|Constraint displacement]]|[[FEM_Module|FEM]]|IconL=Fem-constraint-flow-velocity.svg|IconC=Workbench_FEM.svg|IconR=FEM_ConstraintDisplacement.png}}
|[[FEM_ConstraintTransform|Constraint transform]]
|[[FEM_ConstraintDisplacement|Constraint displacement]]
|[[FEM_Workbench|FEM]]
|IconL=FEM_ConstraintTransform.svg
|IconR=FEM_ConstraintDisplacement.svg
|IconC=Workbench_FEM.svg
}}


<!--T:1-->
<!--T:1-->
{{GuiCommand
{{GuiCommand|Name=FEM ConstraintFixed|MenuLocation=Model → Mechanical Constraints → Constraint fixed||Workbenches=[[Fem Workbench|FEM]]|Shortcut=|SeeAlso=[[FEM_tutorial|FEM tutorial]]}}
|Name=FEM ConstraintFixed
|MenuLocation=Model → Mechanical boundary conditions and loads → Fixed boundary condition
|Workbenches=[[FEM_Workbench|FEM]]
|SeeAlso=[[FEM_ConstraintContact|FEM Constraint contact]]
}}


==Description== <!--T:2-->
==Description== <!--T:2-->


<!--T:6-->
<!--T:6-->
Creates a FEM constraint for a fixed geometry entry by locking all 6 degrees of freedom of the selected object.
Creates a FEM boundary condition for a fixed geometrical entity by locking all the available degrees of freedom of the nodes underlying the selected geometrical entity (6 DOFs for beam and shell elements, 3 for solid elements).


==Usage== <!--T:3-->
==Usage== <!--T:3-->


<!--T:7-->
<!--T:7-->
# There are several ways to invoke the command:
#Click on [[Image:FEM ConstraintFixed.png|32px]] or choose {{KEY|Model}} → '''Mechanical Constraints''' → {{KEY|[[Image:FEM ConstraintFixed.png|32px]] Constraint fixed}} from the top menu.
#* Press the {{Button|[[Image:FEM_ConstraintFixed.svg|16px]] [[FEM_ConstraintFixed|Fixed boundary condition]]}} button.
#Select in the 3D-view the object the constraint should be applied to, which can be
#* Select the {{MenuCommand|Model → Mechanical boundary conditions and loads → [[Image:FEM_ConstraintFixed.svg|16px]] Fixed boundary condition}} option from the menu.
## vertices (corners)
# In the [[3D_view|3D view]] select the object the boundary condition should be applied to, which can be a vertex (corner), edge, or face.
## edges
## faces


==Limitations== <!--T:4-->
==Limitations== <!--T:4-->


<!--T:8-->
<!--T:8-->
You cannot mix object-types within the same constraint.
You cannot mix object types within the same boundary condition. Use a separate fixed boundary condition for each object type.
Use one fixed constraint for each object type.

==Notes== <!--T:5-->


==Notes== <!--T:13-->


<!--T:14-->
* This feature uses the [https://web.mit.edu/calculix_v2.7/CalculiX/ccx_2.7/doc/ccx/node163.html *BOUNDARY card in CalculiX].




<!--T:10-->
<!--T:10-->
{{Docnav
{{Docnav|[[FEM_ConstraintFlowVelocity|Constraint flow velocity]]|[[FEM_ConstraintDisplacement|Constraint displacement]]|[[FEM_Module|FEM]]|IconL=Fem-constraint-flow-velocity.svg|IconC=Workbench_FEM.svg|IconR=FEM_ConstraintDisplacement.png}}
|[[FEM_ConstraintTransform|Constraint transform]]

|[[FEM_ConstraintDisplacement|Constraint displacement]]
<!--T:11-->
|[[FEM_Workbench|FEM]]
{{FEM Tools navi}}
|IconL=FEM_ConstraintTransform.svg
|IconR=FEM_ConstraintDisplacement.svg
|IconC=Workbench_FEM.svg
}}


<!--T:12-->
{{Userdocnavi}}
</translate>
</translate>
{{FEM Tools navi{{#translation:}}}}
{{clear}}
{{Userdocnavi{{#translation:}}}}

Latest revision as of 09:05, 27 January 2024

FEM ConstraintFixed

Menu location
Model → Mechanical boundary conditions and loads → Fixed boundary condition
Workbenches
FEM
Default shortcut
None
Introduced in version
-
See also
FEM Constraint contact

Description

Creates a FEM boundary condition for a fixed geometrical entity by locking all the available degrees of freedom of the nodes underlying the selected geometrical entity (6 DOFs for beam and shell elements, 3 for solid elements).

Usage

  1. There are several ways to invoke the command:
    • Press the Fixed boundary condition button.
    • Select the Model → Mechanical boundary conditions and loads → Fixed boundary condition option from the menu.
  2. In the 3D view select the object the boundary condition should be applied to, which can be a vertex (corner), edge, or face.

Limitations

You cannot mix object types within the same boundary condition. Use a separate fixed boundary condition for each object type.

Notes