Strain rate material model

1

Hello. Does calculix has strain rate depended model or it is available subroutine ?
It is possible to create strain depndet model for example in MFront and implementation in Calculix ?

Also I would like to ask about adaptive hex mesh refinement DURING simulations, it is possible in Code Aster ?

2

CalculiX doesn’t support strain-rate dependence of material models. You would need a UMAT subroutine for this purpose.

For questions regarding Code Aster I would recommend its user forum.

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3

there’s a feature by keyword to do automatically mesh refinement based on stress.

*REFINE MESH,LIMIT=50.
S

however it seems only tetrahedral linear or quadratic element is acceptable

Elements in the input deck other than tetrahedral elements remain untouched.

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4

Yeah, but it’s in CalculiX and the OP was (for some reason) asking about such a feature in Code Aster.
This can be useful: https://youtu.be/7c3sl0B0VvU