search

calculix / CalculiX-Examples

CalculiX examples by Prof. Martin Kraska from Brandenburg University of Applied Sciences. Excellent starting point to master parametric modelling with CGX and CCX.
MIT License
299 stars 92 forks source link

New script, fit material parameters #60

Open 3rav opened 1 year ago

3rav commented 1 year ago

From my point of view, a new script would be very useful, which would calculate the values of the parameters of build-in materials and from the MFront library (Chaboche, Yoshida) against the data from the experiment (like LCF; stress-strain; force-displacement).

*PLASTIC,HARDENING=COMBINED
<Re1>, <strain_e1>
<Rm1>, <strain_m1>
*CYCLIC HARDENING
<Re2>, <strain_e2>
<Rm2>, <strain_m2>

Eksperyment

Something like OptiMax: https://prepomax.fs.um.si/wp-content/uploads/2022/09/Optimax-USERS-MANUAL-v0.6.4.pdf or: https://www.researchgate.net/publication/358588025_A_new_method_for_identification_of_cyclic_plasticity_model_parameters

Something like in CodeAster: https://code-aster.org/V2/UPLOAD/DOC/Formations/15-parameter-fitting.pdf

Maybe Genetic Algorithm (GA from pygad) and https://github.com/cjekel/similarity_measures: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10004668/pdf/materials-16-01821.pdf

Existing scripts can be used: dat2txt.py and param.py (for .inp)