FEM ConstraintInitialTemperature
|
|
| Menu location |
|---|
| Model → Thermal Boundary Conditions and Loads → Initial Temperature |
| Workbenches |
| FEM |
| Default shortcut |
| None |
| Introduced in version |
| - |
| See also |
| FEM tutorial |
| Solvers |
|---|
| CalculiX, Elmer |
Description
Defines an initial temperature for a thermo-mechanical analysis.
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
Usage
- There are several ways to invoke the command:
- Press the
Initial Temperature button. - Select the Model → Thermal Boundary Conditions and Loads → Initial Temperature option from the menu.
- Press the
- Enter an initial temperature value for the analysis.
Limitations
1.0 and below: This tool applies the initial temperature to all nodes in the FEA model - it's not possible to select individual regions.
Properties
- Datainitial Temperature: Initial temperature magnitude.
- DataReferences - introduced in 1.1: Regions to which the initial temperature is applied.
- DataEnable Final Temperature - introduced in 1.1: Enabled prescribed temperature field in a static analysis step.
- DataFinal Temperature - introduced in 1.1: Value of a prescribed temperature field in a static analysis step.
Notes
- This tool uses the *INITIAL CONDITIONS card in CalculiX.
- introduced in 1.1: The final temperature option uses the *TEMPERATURE card in CalculiX.
- Initial temperature has to be defined for all thermomechanical analyses performed with CalculiX, even the steady-state ones.
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
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