FEM SolverCalculixCxxtools

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FEM Solver

Menu location
Solve → Solver CalculiX Standard
Workbenches
FEM
Default shortcut
None
Introduced in version
-
See also
FEM tutorial

Descripción

CalculiXccxTools permite usar el solucionador CalculiX. Puedes usarlo para

  1. configurar los parámetros de análisis
  2. seleccionar directorio de trabajo
  3. Ejecutar el solucionador de CalculiX.

Utilización

  1. CalculiXccxToolsobjeto se crea automáticamente con la creación de Analysis container. De lo contrario utilizar SolveSolver CalculiX Standard , X keyso presione S luego las teclas X
  2. Opcionalmente, configure las propiedades de datos del objeto CalculiXccxTools
  3. Haga doble clic en el objeto CalculiXccxTools
  4. Seleccione el tipo de análisis
  5. Haga clic en Write .inp file
  6. Haga clic en Run CalculiX

Opciones

Al usar Edit.inp file puede mostrar y editar el archivo de entrada de CalculiX manualmente antes de ejecutar el análisis. En este caso, puede ser útil usar el parámetro "Split Input Writer = true".

Properties

Default values can be set in the menu EditPreferencesFEMCalculiX

  • DatosAnalysis Type:
    • static
    • frequency
    • thermomech - for mechanical and thermal loads
  • DatosBeam Shell Result Output 3D: note that CalculiX internally expands 1D and 2D elements into 3D elements to accomplish FE analysis
    • false - results of 1D and 2D elements will be averaged to the nodes of original 1D or 2D mesh (i.e. purely bended beam will show 0 nodal stresses due to averaging)
    • true - resulting mesh will contain 1D and 2D elements expanded to 3D elements
  • DatosEigenmode High Limit: Eigenvalues above this limit will not be calculated
  • DatosEigenmode Low Limit: Eigenvalues below this limit will not be calculated
  • DatosEigenmodes Count: number of lowest eigenmodes to be calculated
  • DatosGeometric Nonlinearity:
    • linear - linear analysis will be performed if model does not contain nonlinear material
    • nonlinear - nonlinear analysis will be performed
  • DatosIterations Control parameter Cutb: defines second line of advanced iteration parameters under *CONTROLS card, used when "Iterations Control Parameter Time Use" is true
  • DatosIterations Control Parameter Iter: defines first line of advanced iteration parameters under *CONTROLS card, used when "Iterations Control Parameter Time Use" is true
  • DatosIterations Control Parameter Time Use
    • true - activates "Iterations Control Parameter Cutb" and "Iterations Control Parameter Iter"
  • DatosIterations Thermo Mech Maximum: maximum number of increments in thermomechanical analysis after which the job will be stopped.
  • DatosIterations User Defined Incrementations:
    • true - automatic incrementation control will be switched off by DIRECT parameter
    • false - incrementation control will be automatic
  • DatosIterations User Defined Time Step Length:
    • true - activates "Time End" and "Time Initial Step" parameters
  • DatosMaterial Nonlinearity:
    • linear - only linear material properties will be included in the analysis
    • nonlinear - nonlinear material properties will be used from Nonlinear mechanical material object
  • DatosMatrix Solver Type: type of the solver to solve equation system inside FE analysis. It may significantly affect calculation speed and memory demands. Suitability depends on your FE model and available hardware
    • default - automatically selects matrix solver depending on available solvers (probably it will be Spooles)
    • spooles - direct solver with support of multiple CPUs. Number of CPUs need to be set in EditPreferencesFEMCalculiX → Solver defaults → Number of CPU's to use)
    • iterativescaling - iterative solver with least memory demands, suitable if model contains mostly 3D elements
    • iterativecholesky - iterative solver with preconditioning with and with low memory demands, suitable if model contains mostly 3D elements
  • DatosSplit Input Writer:
    • false - write whole input into one *.inp file to be used by CalculiX solver
    • true - split solver inputs into more *.inp files, that can clarify hand editing
  • DatosThermo Mechanical Steady State:
    • true - steady state thermo mechanical analysis
    • false - transient thermo mechanical analysis
  • DatosTime End: time period of the step, used when parameter "Iterations User Defined Incrementations" or "Iterations User Defined Time Step Length" is true
  • DatosTime Initial Step: initial time increment of the step, used when parameter "Iterations User Defined Incrementations" or "Iterations User Defined Time Step Length" is true
  • DatosWorking Dir: path to the working directory which will be used for CalculiX analysis files.

Limitations

Notes

Original CalculiX documentation can be found at http://dhondt.de/ in the "ccx" paragraph.

Scripting