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 |
| Solvers |
|---|
| All |
Description
Creates a FEM boundary condition for a fixed geometrical entity by locking all the available degrees of freedom (DOFs) of the nodes underlying the selected geometrical entity (6 DOFs for beam and shell elements, 3 for solid elements).
Usage
- 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.
- Press the
- Press the Add button.
- In the 3D view select the object the boundary condition should be applied to, which can be a vertex, edge, or face (but all objects have to be of the same type). To remove objects from the selection, press the Remove button and click on them.
Limitations
You cannot mix object types within the same boundary condition. Use a separate fixed boundary condition for each object type.
Notes
- This feature uses the *BOUNDARY card in CalculiX.
FEM
- 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
- 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
- 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
- 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, Assembly, BIM, CAM, Draft, FEM, Inspection, Material, Mesh, OpenSCAD, Part, PartDesign, Points, Reverse Engineering, Robot, Sketcher, Spreadsheet, Surface, TechDraw, Test Framework
- Hubs: User hub, Power users hub, Developer hub