FEM ConstraintDisplacement: Difference between revisions

Revision as of 18:24, 21 August 2021

Other languages:

Constraint fixed

Constraint contact

FEM

Menu location
FEM ConstraintDisplacement
Model → Mechanical Constraints → Constraint displacement
Workbenches
FEM
Default shortcut
None
Introduced in version
-
See also
FEM tutorial

Description

Creates a FEM constraint for a prescribed displacement of a selected object for a specified degree of freedom.

Usage

There are several ways to invoke the command:
- Press the FEM ConstraintDisplacement button.
- Select the Model → Mechanical Constraints → Constraint displacement option from the menu.
In the 3D view select the object the constraint should be applied to, which can be a vertex (corner), edge, or face.
Choose a degree of freedom or prescribe a displacement.

Notes

The constraint uses the *BOUNDARY card in CalculiX. Fixing a degree of freedom is explained at http://web.mit.edu/calculix_v2.7/CalculiX/ccx_2.7/doc/ccx/node164.html and prescribing a displacement for a degree of freedom is explained at http://web.mit.edu/calculix_v2.7/CalculiX/ccx_2.7/doc/ccx/node165.html

Constraint fixed

Constraint contact

FEM

FEM Analysis

Materials: Solid, Fluid, Nonlinear mechanical, Reinforced (concrete); Material editor

Element geometry: Beam (1D), Beam rotation (1D), Shell (2D), Fluid flow (1D)

Constraints

Electromagnetic: Electrostatic potential, Current density, Magnetization

Fluid: Initial flow velocity, Initial pressure, Flow velocity

Geometrical: Plane rotation, Section print, Transform

Mechanical: Fixed, Displacement, Contact, Tie, Spring, Force, Pressure, Centrif, Self weight

Thermal: Initial temperature, Heat flux, Temperature, Body heat source

Overwrite Constants: Constant vacuum permittivity

Mesh: Mesh Netgen, Mesh GMSH, Mesh boundary layer, Mesh region, Mesh group, Nodes set, Mesh to mesh

Solve: CalculiX Standard, Elmer, Mystran, Z88; Equations: Deformation, Elasticity, Electrostatic, Electricforce, Magnetodynamic, Magnetodynamic 2D, Flow, Flux, Heat; Solver: Solver control, Solver run

Results: Purge, Show; Postprocessing: Apply changes, Pipeline from result, Warp filter, Scalar clip filter, Function cut filter, Region clip filter, Contours filter, Line clip filter, Stress linearization plot, Data at point clip filter, Filter function plane, Filter function sphere, Filter function cylinder, Filter function box

Utilities: Clipping plane, Remove clipping planes, Open FEM examples; Mesh clear, Mesh display info

Additional: Preferences; FEM Install, FEM Mesh, FEM Solver, FEM CalculiX, FEM Concrete; FEM Element Types

User documentation

Getting started
Installation: Download, Windows, Linux, Mac, Additional components, Docker, AppImage, Ubuntu Snap
Basics: About FreeCAD, Interface, Mouse navigation, Selection methods, Object name, Preferences, Workbenches, Document structure, Properties, Help FreeCAD, Donate

Help: Tutorials, Video tutorials
Workbenches: Std Base, Arch, Assembly, CAM, Draft, FEM, Inspection, Mesh, OpenSCAD, Part, PartDesign, Points, Reverse Engineering, Robot, Sketcher, Spreadsheet, Start, Surface, TechDraw, Test Framework, Web

Addons: Addon Manager, External workbenches, Scripting and macros

Hubs: User hub, Power users hub, Developer hub

@@ Line 1: / Line 1: @@
+<languages/>
 <translate>
+<!--T:9-->
+{{Docnav
+|[[FEM_ConstraintFixed|Constraint fixed]]
+|[[FEM_ConstraintContact|Constraint contact]]
+|[[FEM_Workbench|FEM]]
+|IconL=FEM_ConstraintFixed.svg
+|IconR=FEM_ConstraintContact.svg
+|IconC=Workbench_FEM.svg
+}}
 <!--T:1-->
+{{GuiCommand
-{{GuiCommand|Name=FEM ConstraintDisplacement|MenuLocation=FEM → Constraint displacement||Workbenches=[[Fem Workbench|FEM]]|Shortcut=|SeeAlso=[[FEM_tutorial|FEM tutorial]]}}
+|Name=FEM ConstraintDisplacement
+|MenuLocation=Model → Mechanical Constraints → Constraint displacement
+|Workbenches=[[FEM_Workbench|FEM]]
+|Shortcut=
+|SeeAlso=[[FEM_tutorial|FEM tutorial]]
+}}
 ==Description== <!--T:2-->
+<!--T:6-->
 Creates a FEM constraint for a prescribed displacement of a selected object for a specified degree of freedom.
-==Use== <!--T:3-->
+==Usage== <!--T:3-->
-#Click on [[Image:FEM ConstraintDisplacement.png|32px]] or choose {{KEY| FEM}}  →  {{KEY|[[Image:FEM ConstraintDisplacement.png|32px]] Constraint displacement}}  from the top menu.
-#Select in the 3D-view the object the constraint should be applied to, which can be
-## vertices (corners)
-## edges
-## faces
-#Choose a degree of freedom to fix or prescribe a displacement to.
-==Limitations== <!--T:4-->
+<!--T:7-->
+# There are several ways to invoke the command:
+#* Press the {{Button|[[Image:FEM_ConstraintDisplacement.svg|16px]] [[FEM_ConstraintDisplacement|FEM ConstraintDisplacement]]}} button.
+#* Select the {{MenuCommand|Model → Mechanical Constraints → [[Image:FEM_ConstraintDisplacement.svg|16px]] Constraint displacement}} option from the menu.
+# In the [[3D_view|3D view]] select the object the constraint should be applied to, which can be a vertex (corner), edge, or face.
+# Choose a degree of freedom or prescribe a displacement.
 ==Notes== <!--T:5-->
+<!--T:8-->
 #The constraint uses the *BOUNDARY card in CalculiX. Fixing a degree of freedom is explained at http://web.mit.edu/calculix_v2.7/CalculiX/ccx_2.7/doc/ccx/node164.html and prescribing a displacement for a degree of freedom is explained at http://web.mit.edu/calculix_v2.7/CalculiX/ccx_2.7/doc/ccx/node165.html
+<!--T:10-->
+{{Docnav
+|[[FEM_ConstraintFixed|Constraint fixed]]
+|[[FEM_ConstraintContact|Constraint contact]]
+|[[FEM_Workbench|FEM]]
+|IconL=FEM_ConstraintFixed.svg
+|IconR=FEM_ConstraintContact.svg
+|IconC=Workbench_FEM.svg
+}}
 </translate>
+{{FEM Tools navi{{#translation:}}}}
+{{Userdocnavi{{#translation:}}}}
 {{clear}}
-<languages/>