# Two important questions

**URL:** <https://calculix.discourse.group/t/two-important-questions/1743>\
**Category:** Uncategorized\
**Created:** [July 29, 2023, 4:50pm UTC](https://calculix.discourse.group/t/two-important-questions/1743 "2023-07-29T16:50:20Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Cinek\_Poland](https://avatars.discourse-cdn.com/v4/letter/c/d2c977/32.png) [@Cinek\_Poland](https://calculix.discourse.group/u/Cinek_Poland)\
**Post date:** [July 29, 2023, 4:50pm UTC](https://calculix.discourse.group/t/two-important-questions/1743/1 "2023-07-29T16:50:20Z")

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Does Calculix support adaptive mesh ? I mean changes mesh (refinement) during simulation  
It is possible to create Johnson Cook elasto-plastic model and implement in Calculix using MFRONT ?

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**Author:** ![Calc\_em](https://avatars.discourse-cdn.com/v4/letter/c/43a26b/32.png) [@Calc\_em](https://calculix.discourse.group/u/Calc_em)\
**Post date:** [July 29, 2023, 5:57pm UTC](https://calculix.discourse.group/t/two-important-questions/1743/2 "2023-07-29T17:57:31Z")

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> [@Cinek\_Poland](#):
>
> Does Calculix support adaptive mesh ?

Check the \*REFINE MESH keyword.

> [@Cinek\_Poland](#):
>
> It is possible to create Johnson Cook elasto-plastic model and implement in Calculix using MFRONT ?

The Johnson-Cook model will be available in the next release of CalculiX.

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**Author:** ![xyont](https://yyz2.discourse-cdn.com/free1/user_avatar/calculix.discourse.group/xyont/32/3553_2.png) [@xyont](https://calculix.discourse.group/u/xyont)\
**Post date:** [July 29, 2023, 6:57pm UTC](https://calculix.discourse.group/t/two-important-questions/1743/3 "2023-07-29T18:57:30Z")

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> [@Cinek\_Poland](#):
>
> It is possible to create Johnson Cook elasto-plastic model and implement in Calculix using MFRONT ?

it is available and ready to use,

 ![2017-11-08-00_54_18-johnsoncook-inp-scite](https://global.discourse-cdn.com/free1/uploads/calculix/original/2X/c/c243835d0b5e438f5dfd3515fd3174e4e480c729.png)

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**Author:** ![Cinek\_Poland](https://avatars.discourse-cdn.com/v4/letter/c/d2c977/32.png) [@Cinek\_Poland](https://calculix.discourse.group/u/Cinek_Poland)\
**Post date:** [July 29, 2023, 9:57pm UTC](https://calculix.discourse.group/t/two-important-questions/1743/4 "2023-07-29T21:57:00Z")

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does “REFINE MESH” keyword works during simulations ?

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**Author:** ![Calc\_em](https://avatars.discourse-cdn.com/v4/letter/c/43a26b/32.png) [@Calc\_em](https://calculix.discourse.group/u/Calc_em)\
**Post date:** [July 30, 2023, 7:50am UTC](https://calculix.discourse.group/t/two-important-questions/1743/5 "2023-07-30T07:50:02Z")

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CalculiX automatically reruns the analysis with refined mesh. Check the description of this keyword in the documentation: [http://www.dhondt.de/ccx\_2.20.pdf](http://www.dhondt.de/ccx_2.20.pdf)