Calculix Time Step

About the development of the FEM module/workbench.

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Simon_Bs
Posts: 1
Joined: Wed Nov 16, 2022 9:19 am

Calculix Time Step

Post by Simon_Bs »

Hello,
I'm working on a thermo analysis on freecad but, when I run my simulation, I got issues with my results. I'd like a simulation time of 80s with results about every 0.01s but when I run my simulation, the results aren't at a constant time step and sometime don't go to 80s.
Here are my parameters, can you help me please ?
Thank you
Simon,

###
solver_object = ObjectsFem.makeSolverCalculixCcxTools(FreeCAD.activeDocument(), "CalculiX")
solver_object.AnalysisType = 'thermomech'
solver_object.MaterialNonlinearity = 'linear'
solver_object.ThermoMechSteadyState = False
solver_object.MatrixSolverType = 'default'
solver_object.IterationsControlParameterTimeUse = False
solver_object.IterationsUserDefinedTimeStepLength= True
solver_object.IterationsUserDefinedIncrementations= True
solver_object.TimeInitialStep =0.01
solver_object.TimeEnd = 80.00
solver_object.WorkingDir = "C:\\"
analysis_object.addObject(solver_object)
chrisb
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Posts: 53920
Joined: Tue Mar 17, 2015 9:14 am

Re: Calculix Time Step

Post by chrisb »

Hi and welcome to the forum!

Not being an FEM expert myself I guess that the FEM specialists can see more if you attach the file.
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NewJoker
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Posts: 3017
Joined: Sun Oct 11, 2020 7:49 pm

Re: Calculix Time Step

Post by NewJoker »

You can add the *TIME POINTS keyword to the input file to define a sequence of time points at which output will be written.
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