FEM ConstraintDisplacement

Previous: Constraint fixed

Next: Constraint plane rotation

FEM

FEM ConstraintDisplacement
Menu location
Model → Mechanical Constraints → Constraint displacement
Workbenches
FEM
Default shortcut
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

1. Click on or choose Model → Mechanical Constraints → Constraint displacement from the top menu.
2. Select in the 3D view the object the constraint should be applied to, which can be
   1. vertices (corners)
   2. edges
   3. faces
3. Choose a degree of freedom to fix or prescribe a displacement to.

Notes

1. 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

Previous: Constraint fixed

Next: Constraint plane rotation

FEM

FEM

• FEM Analysis

• Materials: Solid, Fluid, Nonlinear mechanical; Material editor

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

---

Constraints

• Electrostatic: Potential

• Fluid: Initial velocity, Fluid boundary, Flow velocity

• Mechanical: Fixed, Displacement, Plane rotation, Contact, Transform, Force, Pressure, Self weight, Bearing, Gear, Pulley

• Thermal: Initial temperature, Heat flux, Temperature, Heat source

---

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

• Solve: Calculix tools, CalculiX, Elmer, Z88; Equations: Heat, Elasticity, Electrostatic, Fluxsolver, Flow; Solver: Solver control, Solver run

• Results: Purge, Show; Postprocessing: Apply changes, Pipeline from result, Create warp vector filter, Create scalar clip filter, Create cut filter, Create clip filter, Create data along line filter, Create linearized stresses,

Create data at point filter, Create functions

• Utilities: Clipping plane, Remove clipping planes; Mesh clear, Mesh print info

---

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

User documentation

• Getting started
• Installation: Download, Linux, Windows, MacOS, Docker, AppImage
• Basics: About FreeCAD, Interface, Workbenches, Preferences, Document structure, Properties, Mouse Model; Help FreeCAD, Donate

---

• Help: Tutorials, Video tutorials
• Workbenches: Std Base; Arch, Draft, FEM, Image, Inspection, Mesh, OpenSCAD, Part, PartDesign, Path, Points, Raytracing, Reverse Engineering, Sketcher, Spreadsheet, Start, Surface workbench, TechDraw, Test Framework, Web
• Unmaintained workbenches: Plot, Robot, Ship
• Deprecated workbenches: Complete, Drawing

---

• Code: Addon Manager, Addons, Macros, External workbenches

---

• Hubs: User hub, Power users hub, Developer hub