Calculix 2.23 has released

General Questions
1

Why we can’t use the lastest solver Calculix 2.23?

2

You can. Just copy the 2.23 Windows executable and dlls into ./Solver

Here is an installation guide, if the executable is not available

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3

The main issue is that CalculiX 2.23 doesn’t allow using rigid body constraints with 2D elements even in nonlinear analyses. The next version shouldn’t have this limitation anymore.

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4

When will the next version be released?

5

Hard to say, but they usually release new CalculiX version in Q3 or Q4. I think that it was usually in August, but 2.23 was released at the end of October last year.

If you want to know more, ask on the CalculiX forum. The dev team is active there.

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6

Thank you very much!

7

Here are the release dates of all the CalculiX versions whose manuals are still available on Guido’s website:

ccx version Day Month Year
2.23 19 October 2025
2.22 5 August 2024
2.21 29 July 2023
2.20 31 July 2022
2.19 17 December 2021
2.18 15 September 2021
2.17 23 July 2020
2.16 24 November 2019
2.15 15 December 2018
2.14 28 April 2018
2.13 8 October 2017
2.12 2 April 2017
2.11 31 July 2016
2.10 8 March 2016
2.9 19 November 2015

As you can see, there used to be 2 releases a year, but now it’s just one, usually released in August or later.

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8

As for the release notes, here’s what we can expect in 2.24 based on Guido’s log:

  • support for sets on *PRE-TENSION SECTION and *COUPLING cards
  • new REPAIR ONLY parameter for the *REFINE MESH card
  • *DAMAGE INITIATION as a standard *MATERIAL card option
  • support for interface loading
  • calculation of self-inductance and electromagnetic energy
  • material ramping at divergence
  • parallel CFD calculations switched from pthread to OpenMP
  • output of accelerations to .dat and .frd file results
  • .frd binary output format update to support double precision data storage

IMO acceleration output is the biggest new feature. But I mostly hope for more bug fixes.

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