FEM SolverCalculixCxxtools/ru: Difference between revisions

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==Description==
==Description==


CalculiXccxTools enables usage of the [http://dhondt.de/ CalculiX] solver. It may be used for:
[[FEM SolverCalculixCxxtools|CalculiXccxTools]] enables usage of the [[CalculiX]] solver. It may be used for:
# setting analysis parameters
# Setting analysis parameters
# selecting working directory
# Selecting working directory
# running the CalculiX solver
# Running the CalculiX solver


==Usage==
==Usage==


# {{KEY|[[Image:FEM_Solver.png|24px]] CalculiXccxTools}} object is created automatically with creation of {{KEY|[[Image:FEM_Analysis.png|24px]] [[FEM_Analysis|Analysis container]]}}. Otherwise use {{KEY|Solve}} → {{KEY|Solver CalculiX Standard}} , or press {{KEY|S}} then {{KEY|X}} keys
# [[Image:FEM_Solver.png|24px]] [[CalculiXccxTools]] object is created automatically with creation of {{KEY|[[Image:FEM_Analysis.png|24px]] [[FEM_Analysis|Analysis container]]}}. Otherwise use {{KEY|Solve}} → {{KEY|Solver CalculiX Standard}} , or press {{KEY|S}} then {{KEY|X}} keys
# Optionally set data properties of the {{KEY|[[Image:FEM_Solver.png|24px]] CalculiXccxTools}} object
# Optionally set data properties of the {{KEY|[[Image:FEM_Solver.png|24px]] CalculiXccxTools}} object
# Double click on the {{KEY|[[Image:FEM_Solver.png|24px]] CalculiXccxTools}} object
# Double click on the {{KEY|[[Image:FEM_Solver.png|24px]] CalculiXccxTools}} object
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** true - resulting mesh will contain 1D and 2D elements expanded to 3D elements
** true - resulting mesh will contain 1D and 2D elements expanded to 3D elements


* {{PropertyData|Eigenmode High Limit}}: Eigenvalues above this limit will not be calculated
* {{PropertyData|Eigenmode High Limit}}: Eigenvalues above this limit will not be calculated; '''Note''': if eigenvalues of the model are above the high limit, CalculiX will finish without output


* {{PropertyData|Eigenmode Low Limit}}: Eigenvalues below this limit will not be calculated
* {{PropertyData|Eigenmode Low Limit}}: Eigenvalues below this limit will not be calculated

Revision as of 20:50, 3 May 2020

Other languages:

FEM Solver

Системное название
FEM Solver
Расположение в меню
FEM → Solver Calculix
Верстаки
FEM
Быстрые клавиши
Нет
Представлено в версии
-
См. также
FEM tutorial

Description

CalculiXccxTools enables usage of the CalculiX solver. It may be used for:

  1. Setting analysis parameters
  2. Selecting working directory
  3. Running the CalculiX solver

Usage

  1. CalculiXccxTools object is created automatically with creation of Analysis container. Otherwise use SolveSolver CalculiX Standard , or press S then X keys
  2. Optionally set data properties of the CalculiXccxTools object
  3. Double click on the CalculiXccxTools object
  4. Select type of the analysis
  5. Click Write .inp file
  6. Click Run CalculiX

Options

By using Edit .inp file you can display and edit CalculiX input file manually before running analysis. In this case it might be useful to use parameter "Split Input Writer = true".

Properties

Default values can be set in the menu EditPreferencesFEMCalculiX

  • ДанныеAnalysis Type:
    • static
    • frequency
    • thermomech - for mechanical and thermal loads
  • ДанныеBeam 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
  • ДанныеEigenmode High Limit: Eigenvalues above this limit will not be calculated; Note: if eigenvalues of the model are above the high limit, CalculiX will finish without output
  • ДанныеEigenmode Low Limit: Eigenvalues below this limit will not be calculated
  • ДанныеEigenmodes Count: number of lowest eigenmodes to be calculated
  • ДанныеGeometric Nonlinearity:
    • linear - linear analysis will be performed if model does not contain nonlinear material
    • nonlinear - nonlinear analysis will be performed
  • ДанныеIterations Control parameter Cutb: defines second line of advanced iteration parameters under *CONTROLS card, used when "Iterations Control Parameter Time Use" is true
  • ДанныеIterations Control Parameter Iter: defines first line of advanced iteration parameters under *CONTROLS card, used when "Iterations Control Parameter Time Use" is true
  • ДанныеIterations Control Parameter Time Use
    • true - activates "Iterations Control Parameter Cutb" and "Iterations Control Parameter Iter"
  • ДанныеIterations Thermo Mech Maximum: maximum number of increments in thermomechanical analysis after which the job will be stopped.
  • ДанныеIterations User Defined Incrementations:
    • true - automatic incrementation control will be switched off by DIRECT parameter
    • false - incrementation control will be automatic
  • ДанныеIterations User Defined Time Step Length:
    • true - activates "Time End" and "Time Initial Step" parameters
  • ДанныеMaterial Nonlinearity:
    • linear - only linear material properties will be included in the analysis
    • nonlinear - nonlinear material properties will be used from Nonlinear mechanical material object
  • ДанныеMatrix 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
  • ДанныеSplit 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
  • ДанныеThermo Mechanical Steady State:
    • true - steady state thermo mechanical analysis
    • false - transient thermo mechanical analysis
  • ДанныеTime End: time period of the step, used when parameter "Iterations User Defined Incrementations" or "Iterations User Defined Time Step Length" is true
  • ДанныеTime Initial Step: initial time increment of the step, used when parameter "Iterations User Defined Incrementations" or "Iterations User Defined Time Step Length" is true
  • ДанныеWorking 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