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Analysis Container

In one sentence: The root container object for an FEM study — all materials, boundary conditions, mesh, solver, and results live inside it.

Overview

Workbench: FEM
Menu: FEM → Model → Analysis Container
Shortcut: S, A

The Analysis container (Fem::FemAnalysis) is the logical boundary of one FEM study. Everything the solver needs — materials, mesh, boundary conditions, solver configuration, and results — lives inside it.

Intuition

Analysis
├── Material_Solid          ← material properties
├── Constraint_Fixed        ← boundary condition
├── Constraint_Force        ← load
├── FEMMesh_Netgen          ← mesh
├── SolverCalculiX          ← solver configuration
└── ResultMechanical        ← results (after solve)

You can have multiple analyses in one document — for example a static analysis and a frequency (modal) analysis of the same geometry. Each is self-contained. The active analysis is shown in bold in the model tree; all new FEM objects are added to the active analysis.

Step-by-step

  1. Choose FEM → Model → Analysis Container (or press S, A).
  2. The Analysis container appears and is automatically activated.
  3. Add materials, boundary conditions, mesh, and a solver in sequence.

Activating an analysis

Double-click an analysis in the model tree to make it the active analysis.

Python API

import FreeCAD as App
import ObjectsFem

doc = App.newDocument()
analysis = ObjectsFem.makeAnalysis(doc, "Analysis")
doc.recompute()

See also