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If you are not sure or not able to commit to a regular donation, but still want to help the project, you can do a one-time donation, of any amount.

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We call sponsoring the act of donating money recurrently to the FreeCAD project. You can do that as an individual or as a company or institution, through different channels or platforms, depending on your preferences.

Sponsoring FreeCAD allows its developers to count on a steady flow of income, so it allows the FPA to plan things ahead, and the FreeCAD developers to invest themselves more seriously into FreeCAD.

To encourage persons and companies to sponsor the FreeCAD project, we have created different sponsoring tiers. When donating regularly to the project, unless you prefer to stay anonymous, your name, company name and/or logo will be featured on this website, depending on the tier you fit into:

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🥇 Gold sponsor : from 200 USD / 200 EUR per month. Your name or company name and logo displayed on this page, with a link to your website and a custom description text. Companies that have helped FreeCAD early on also appear under Gold sponsors.

Instead of donating each month, you might find it more comfortable to make a one-time donation that, when divided by twelve, would give you right to enter a sponsoring tier. Don't hesitate to do so!

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GuiCommand:Container| {{GuiCommand Name: FEM ConstraintFixed MenuLocation: Model , Mechanical boundary conditions and loads , Fixed boundary condition Workbenches: FEM_Workbench SeeAlso: FEM_ConstraintContact }} {{GuiCommandFemInfo Solvers: All }}

FEM ConstraintFixed

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

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 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.

⏵ documentation index > FEM > FEM ConstraintFixed

This page is retrieved from https://github.com/FreeCAD/FreeCAD-documentation/blob/main/wiki/FEM_ConstraintFixed.md