FEM ConstraintInitialTemperature/it
|
|
| Posizione nel menu |
|---|
| Modello → Vincoli termici → Vincolo temperatura iniziale |
| Ambiente |
| FEM |
| Avvio veloce |
| Nessuno |
| Introdotto nella versione |
| - |
| Vedere anche |
| Tutorial FEM |
Descrizione
Crea un vincolo temperatura iniziale per l'analisi termomeccanica.
introduced in 1.0: May also be used to prescribe a temperature field in a static analysis step (to simulate thermal expansion with no need for thermomechanical analysis with temperature boundary condition).
Two cubes with different initial temperatures exchanging heat
Utilizzo
- Cliccare su
o scegliere Modello → Vincoli termici → Vincolo temperatura iniziale dal menu principale. - Inserire un valore iniziale della temperatura per l'analisi.
Limitazioni
Il vincolo applica la temperatura iniziale a tutti i nodi nel modello FEA
Properties
- Datiinitial Temperature: Initial temperature magnitude.
- DatiReferences - introduced in 1.1: Regions to which the initial temperature is applied.
- DatiEnable Final Temperature - introduced in 1.1: Enabled prescribed temperature field in a static analysis step.
- DatiFinal Temperature - introduced in 1.1: Value of a prescribed temperature field in a static analysis step.
- DatiEnable Amplitude - introduced in 1.1: Enables the use of CalculiX's amplitude for time variation of the prescribed temperature field. At a given time, magnitude of the field is multiplied by the amplitude value corresponding to that time. Linear interpolation is used between the specified values. Constant values are used outside of the specified range.
- DatiAmplitude Values - introduced in 1.1: Amplitude table in the following format:
time_1, amplitude_value_1 …
Note
- Il vincolo usa la **INITIAL CONDITIONS card in CalculiX. Il vincolo temperatura iniziale è spiegato in http://web.mit.edu/calculix_v2.7/CalculiX/ccx_2.7/doc/ccx/node215.html
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