# Latest **URL:** https://calculix.discourse.group/latest.md?page=1 [Latest](https://calculix.discourse.group/latest.md) · [Categories](https://calculix.discourse.group/categories.md) **Page:** 2 --- ## [Problem with creating surface by 'comp' command in CGX](https://calculix.discourse.group/t/problem-with-creating-surface-by-comp-command-in-cgx/116)
**Author:** [@W.H.Meng](https://calculix.discourse.group/u/W.H.Meng)\ **Replies:** 12\ **Last updated:** [July 25, 2026, 11:08am UTC](https://calculix.discourse.group/t/problem-with-creating-surface-by-comp-command-in-cgx/116 "2026-07-25T11:08:42Z")
Hi there, My intention was going to apply a 3D bolt pretension by a surface and a node. I partitioned a cylinder by a plane in Salome and made a face group of the interface ‘pret’ and a bottom face of cylinder ‘bot’. Th… --- ## [Tags associated with the issues.Github](https://calculix.discourse.group/t/tags-associated-with-the-issues-github/4070)
**Author:** [@Disla](https://calculix.discourse.group/u/Disla)\ **Replies:** 2\ **Last updated:** [July 22, 2026, 9:51am UTC](https://calculix.discourse.group/t/tags-associated-with-the-issues-github/4070 "2026-07-22T09:51:52Z")
Hello, ¿What do the different tags associated with the issues mean on the Github official webpage? In particular the “2.23” TAG. --- ## [NAN in Pardiso solver( the penalty contact method )](https://calculix.discourse.group/t/nan-in-pardiso-solver-the-penalty-contact-method/4045)
**Author:** [@pzu4](https://calculix.discourse.group/u/pzu4)\ **Replies:** 9\ **Last updated:** [July 20, 2026, 2:33am UTC](https://calculix.discourse.group/t/nan-in-pardiso-solver-the-penalty-contact-method/4045 "2026-07-20T02:33:12Z")
I am running a static analysis with CalculiX (CCX). I first modeled the bonded interface using the \*TIE constraint, but the results were unsatisfactory. I then switched to the penalty contact method instead. However, the… --- ## [Collected posts on third party developments, examples, etc](https://calculix.discourse.group/t/collected-posts-on-third-party-developments-examples-etc/3827)
**Author:** [@Durbul](https://calculix.discourse.group/u/Durbul)\ **Replies:** 25\ **Last updated:** [July 19, 2026, 9:40am UTC](https://calculix.discourse.group/t/collected-posts-on-third-party-developments-examples-etc/3827 "2026-07-19T09:40:57Z")
This post contains several issues from the CalculiX GitHub repository that have been closed due to our new issue policy (\[Announcement\] Issue policy on GitHub · Issue #158 · Dhondtguido/CalculiX · GitHub) and were transf… --- ## [Axial forces in beams & trusses](https://calculix.discourse.group/t/axial-forces-in-beams-trusses/4051)
**Author:** [@WP\_316](https://calculix.discourse.group/u/WP_316)\ **Replies:** 1\ **Last updated:** [July 13, 2026, 4:16pm UTC](https://calculix.discourse.group/t/axial-forces-in-beams-trusses/4051 "2026-07-13T16:16:59Z")
Hello, Very boring question, but tearing my hair out over it. How to I get axial force values out of beams and trusses? I need to post-process the figures, so need them in the .dat from \*Node Print. Section forces seem… --- ## [How to model elastic spring back](https://calculix.discourse.group/t/how-to-model-elastic-spring-back/2811)
**Author:** [@Juseche](https://calculix.discourse.group/u/Juseche)\ **Replies:** 14\ **Last updated:** [July 13, 2026, 2:32pm UTC](https://calculix.discourse.group/t/how-to-model-elastic-spring-back/2811 "2026-07-13T14:32:49Z")
Hi I simulated the forming process of a metal plate (considering plasticity and large displacements) by incrementally imposing a displacement field on the plate. This simulation works well. Now, how do I simulate the pl… --- ## [Explicit Dynamic Analysis Cube on a Thin Plate](https://calculix.discourse.group/t/explicit-dynamic-analysis-cube-on-a-thin-plate/4049)
**Author:** [@Peter](https://calculix.discourse.group/u/Peter)\ **Replies:** 1\ **Last updated:** [July 11, 2026, 5:05pm UTC](https://calculix.discourse.group/t/explicit-dynamic-analysis-cube-on-a-thin-plate/4049 "2026-07-11T17:05:19Z")
Dear all, I’m new to CalculiX and am trying to run an EXPLICIT DYNAMIC SIMULATION using CalculiX. The simulation involves the impact of a cube on a thin plate. What I get is a strange trajectory of the cube, which doesn… --- ## [Multiple FRD files instead one file](https://calculix.discourse.group/t/multiple-frd-files-instead-one-file/4032)
**Author:** [@jr90236](https://calculix.discourse.group/u/jr90236)\ **Replies:** 2\ **Last updated:** [July 7, 2026, 7:20pm UTC](https://calculix.discourse.group/t/multiple-frd-files-instead-one-file/4032 "2026-07-07T19:20:44Z")
Hi everyone, I am running a thermal analysis, and sometimes the FRD file becomes very large. I am considering modifying the solver so that it writes multiple FRD files, perhaps every 10 increments or something similar. … --- ## [Windows Pardiso Nonlinear convergence problem](https://calculix.discourse.group/t/windows-pardiso-nonlinear-convergence-problem/4031)
**Author:** [@fgr](https://calculix.discourse.group/u/fgr)\ **Replies:** 3\ **Last updated:** [July 6, 2026, 4:44pm UTC](https://calculix.discourse.group/t/windows-pardiso-nonlinear-convergence-problem/4031 "2026-07-06T16:44:43Z")
I’m not sure if this issue relates only to the windows Pardiso solver when used nonlinear and displacement controlled neither the Pastix or the Spooles solvers seem having this issue at least with this specific combinati… --- ## [Glue gap in modal analysis](https://calculix.discourse.group/t/glue-gap-in-modal-analysis/4029)
**Author:** [@stoli](https://calculix.discourse.group/u/stoli)\ **Replies:** 9\ **Last updated:** [July 5, 2026, 9:31am UTC](https://calculix.discourse.group/t/glue-gap-in-modal-analysis/4029 "2026-07-05T09:31:26Z")
Hi all, i am facing an issue, when performing modal analyses and steady state dynamics, when there is a cohesive layer involved. The simplified model consists of two steel columns, glued together. The adhesive is model… --- ## [CalculiX and PaStiX solver Windows version](https://calculix.discourse.group/t/calculix-and-pastix-solver-windows-version/130)
**Author:** [@rafal.brzegowy](https://calculix.discourse.group/u/rafal.brzegowy)\ **Replies:** 96\ **Last updated:** [June 28, 2026, 7:45pm UTC](https://calculix.discourse.group/t/calculix-and-pastix-solver-windows-version/130 "2026-06-28T19:45:15Z")
Hi all, I was able to compile the windows version of ccx with the Pastix solver. But currently this version does not work, an error immediately pops up (crash of ccx). --- ## [3D Simulation of 2D Geometries](https://calculix.discourse.group/t/3d-simulation-of-2d-geometries/4022)
**Author:** [@James\_G](https://calculix.discourse.group/u/James_G)\ **Replies:** 5\ **Last updated:** [June 27, 2026, 3:52pm UTC](https://calculix.discourse.group/t/3d-simulation-of-2d-geometries/4022 "2026-06-27T15:52:06Z")
I believe I have correctly re-written an Abaqus UEL into a format usable for CalculiX (User Element Troubleshooting), and now I am trying to verify it works as intended in comparison to analytical solutions. Unfortunatel… --- ## [Sealing lip deformation / assembly problem](https://calculix.discourse.group/t/sealing-lip-deformation-assembly-problem/3988)
**Author:** [@mat25](https://calculix.discourse.group/u/mat25)\ **Replies:** 45\ **Last updated:** [June 25, 2026, 1:59pm UTC](https://calculix.discourse.group/t/sealing-lip-deformation-assembly-problem/3988 "2026-06-25T13:59:18Z")
Hello everyone, I started to do my first steps with PrePoMax and it’s fascinating to see all the things you can do with it. :slight\_smile: I wanted to do a 2D calculation of an sealing assembly process to see the defor… --- ## [CalculiX (.frd) and pyvista](https://calculix.discourse.group/t/calculix-frd-and-pyvista/3816)
**Author:** [@rafal.brzegowy](https://calculix.discourse.group/u/rafal.brzegowy)\ **Replies:** 3\ **Last updated:** [June 22, 2026, 5:17pm UTC](https://calculix.discourse.group/t/calculix-frd-and-pyvista/3816 "2026-06-22T17:17:28Z")
I am pleased to inform you that I have successfully added native support for reading .frd files directly into PyVista. This feature is currently slated for release with version 0.48, which is expected to be available ar… --- ## [Cavity Radiation Errors Requiring Recompiling](https://calculix.discourse.group/t/cavity-radiation-errors-requiring-recompiling/4018)
**Author:** [@JamesMc](https://calculix.discourse.group/u/JamesMc)\ **Replies:** 2\ **Last updated:** [June 19, 2026, 10:42am UTC](https://calculix.discourse.group/t/cavity-radiation-errors-requiring-recompiling/4018 "2026-06-19T10:42:04Z")
Hello all. I am running CalculiX 2.23 via PreProMax 2.5.0. I have been looking at some thermal models and I have been trying to implement the analysis of some internal cavity radiation. When enabled, the simulations woul… --- ## [Official python wrapper of calculix like PyMFEM?](https://calculix.discourse.group/t/official-python-wrapper-of-calculix-like-pymfem/3871)
**Author:** [@Stefano4000](https://calculix.discourse.group/u/Stefano4000)\ **Replies:** 4\ **Last updated:** [June 14, 2026, 5:19pm UTC](https://calculix.discourse.group/t/official-python-wrapper-of-calculix-like-pymfem/3871 "2026-06-14T17:19:44Z")
PyMFEM is python adapter to MFEM PyMFEM supports the previous version of MFEM and develops actual version. Same should be available by calculix. Actual are partly supported tools pyCCX, pygccx and others which sup… --- ## [Precice 3.4.0 available](https://calculix.discourse.group/t/precice-3-4-0-available/3858)
**Author:** [@Stefano4000](https://calculix.discourse.group/u/Stefano4000)\ **Replies:** 6\ **Last updated:** [June 14, 2026, 5:16pm UTC](https://calculix.discourse.group/t/precice-3-4-0-available/3858 "2026-06-14T17:16:15Z")
See actual calculix adapter is with version 2.20.1 quite old. Perhaps a Meeting in Munich by TUM and MTU can solve this. In Doku precice 3.0.x is here a team with calculix 2.20 and the adapter 2.20.1. So perhaps an … --- ## [Pretension shear/tensile resistance](https://calculix.discourse.group/t/pretension-shear-tensile-resistance/2091)
**Author:** [@Disla](https://calculix.discourse.group/u/Disla)\ **Replies:** 39\ **Last updated:** [June 12, 2026, 6:51am UTC](https://calculix.discourse.group/t/pretension-shear-tensile-resistance/2091 "2026-06-12T06:51:25Z")
Hi, I’m testing other user approach of bolting. I have certainly pushed hard the test as it has shown to be very stable in terms of convergence. What I have notice is that as soon as I activate the pretension section (… --- ## [Connect BEAM to TRUSS](https://calculix.discourse.group/t/connect-beam-to-truss/3933)
**Author:** [@kassbohm](https://calculix.discourse.group/u/kassbohm)\ **Replies:** 11\ **Last updated:** [June 11, 2026, 2:42pm UTC](https://calculix.discourse.group/t/connect-beam-to-truss/3933 "2026-06-11T14:42:25Z")
Using ccx 2.23. Similar to issue on Github. Is it impossible to connect a beam element to a truss element? Using a shared node does not work: The cross section of the left end of the beam should be rotated, but i… --- ## [CalculiX failing on server, but working on local laptop](https://calculix.discourse.group/t/calculix-failing-on-server-but-working-on-local-laptop/3974)
**Author:** [@CosmoKramer](https://calculix.discourse.group/u/CosmoKramer)\ **Replies:** 9\ **Last updated:** [June 9, 2026, 1:08pm UTC](https://calculix.discourse.group/t/calculix-failing-on-server-but-working-on-local-laptop/3974 "2026-06-09T13:08:47Z")
I’m trying to run CalculiX (PrePoMax) on an HPC server and I’m getting an error – it isn’t even getting to iterations. But when I run on my local laptop it runs fine and produces results. Have tried the PrePoMax communit… --- ## [Large modal analysis of a shell diaphragm – mesh size vs number of requested modes](https://calculix.discourse.group/t/large-modal-analysis-of-a-shell-diaphragm-mesh-size-vs-number-of-requested-modes/3955)
**Author:** [@solhaga](https://calculix.discourse.group/u/solhaga)\ **Replies:** 12\ **Last updated:** [June 6, 2026, 8:01pm UTC](https://calculix.discourse.group/t/large-modal-analysis-of-a-shell-diaphragm-mesh-size-vs-number-of-requested-modes/3955 "2026-06-06T20:01:53Z")
I am performing a modal analysis in CalculiX of a loudspeaker diaphragm modeled as a single shell using PrePoMaX as front end. Model characteristics: Circular diaphragm, diameter: 75 mm Shell model Approximately 5306 … --- ## [Question New surfaces and new solids of reduced model after optimization with beso to CGX or other tool?](https://calculix.discourse.group/t/question-new-surfaces-and-new-solids-of-reduced-model-after-optimization-with-beso-to-cgx-or-other-tool/3857)
**Author:** [@Stefano4000](https://calculix.discourse.group/u/Stefano4000)\ **Replies:** 22\ **Last updated:** [May 27, 2026, 9:19am UTC](https://calculix.discourse.group/t/question-new-surfaces-and-new-solids-of-reduced-model-after-optimization-with-beso-to-cgx-or-other-tool/3857 "2026-05-27T09:19:19Z")
Question New surfaces and new solids of reduced model after optimization with beso to CGX or other tool? How to make? The outer nodes of the results are points or near a new outer surface. I see here Matthek or levien … --- ## [Obtain Element Stresses](https://calculix.discourse.group/t/obtain-element-stresses/2556)
**Author:** [@ademyilmaz](https://calculix.discourse.group/u/ademyilmaz)\ **Replies:** 13\ **Last updated:** [May 26, 2026, 2:31pm UTC](https://calculix.discourse.group/t/obtain-element-stresses/2556 "2026-05-26T14:31:19Z")
Hi, Is it possible to obtain each element nodal stress tensor result ? I want to calculate nodal stresses manually by using each node parent element stresses. Ex: Element-1 : Node 1: Sx : 1 , Sy : 1, Sz : 1 Sxy : 1 … … --- ## [\*AMPLITUDE card enhancement: Mathematical expressions](https://calculix.discourse.group/t/amplitude-card-enhancement-mathematical-expressions/3947)
**Author:** [@johanngil](https://calculix.discourse.group/u/johanngil)\ **Replies:** 0\ **Last updated:** [May 21, 2026, 2:41pm UTC](https://calculix.discourse.group/t/amplitude-card-enhancement-mathematical-expressions/3947 "2026-05-21T14:41:04Z")
The attached development (https://www.dropbox.com/scl/fi/aznilolkoe92y8dsvyhil/Equation-Amplitudes.zip?rlkey=uu4coem4rxigirmuun5qdrwem&dl=0) enhances the current ccx \*AMPLITUDE functionality through an additional parame… --- ## [How to install it in ubuntu software step by step](https://calculix.discourse.group/t/how-to-install-it-in-ubuntu-software-step-by-step/3929)
**Author:** [@26dr0009](https://calculix.discourse.group/u/26dr0009)\ **Replies:** 6\ **Last updated:** [May 19, 2026, 2:01pm UTC](https://calculix.discourse.group/t/how-to-install-it-in-ubuntu-software-step-by-step/3929 "2026-05-19T14:01:31Z")
how to install calculix using precice in ubontu step by step --- ## [How to model springback after bending](https://calculix.discourse.group/t/how-to-model-springback-after-bending/3931)
**Author:** [@k3rrig4n](https://calculix.discourse.group/u/k3rrig4n)\ **Replies:** 24\ **Last updated:** [May 15, 2026, 2:38pm UTC](https://calculix.discourse.group/t/how-to-model-springback-after-bending/3931 "2026-05-15T14:38:52Z")
Hello guys. I am currently trying to model unloading (springback) after bending. I tried making the stamp go back in the second step and modeling the change to remove the stamp, but they are not working. With the stamp g… --- ## [Validation against ISO 10211-2017](https://calculix.discourse.group/t/validation-against-iso-10211-2017/3942)
**Author:** [@CosmoKramer](https://calculix.discourse.group/u/CosmoKramer)\ **Replies:** 4\ **Last updated:** [May 13, 2026, 6:19pm UTC](https://calculix.discourse.group/t/validation-against-iso-10211-2017/3942 "2026-05-13T18:19:06Z")
Hey folks – wanted to alert you to a thread I started on the PrePoMax discourse about validating CalculiX against ISO 10211. TLDR: It passed all test cases, so now we can say that CalculiX is validated against ISO 10211-… --- ## [Automated simulation Pipelines for CalculiX using FreeCAD](https://calculix.discourse.group/t/automated-simulation-pipelines-for-calculix-using-freecad/3938)
**Author:** [@openCAE-solutions](https://calculix.discourse.group/u/openCAE-solutions)\ **Replies:** 5\ **Last updated:** [May 10, 2026, 7:21pm UTC](https://calculix.discourse.group/t/automated-simulation-pipelines-for-calculix-using-freecad/3938 "2026-05-10T19:21:33Z")
Hi, I received quite a positive response to some of my LinkedIn posts, so I thought this might be of interest to the CalculiX community as well. I’ve recently been working on automated parameter variation and simulatio… --- ## [Notice of removal of fallback LAPACK routines from CCX](https://calculix.discourse.group/t/notice-of-removal-of-fallback-lapack-routines-from-ccx/3937)
**Author:** [@cwoelf](https://calculix.discourse.group/u/cwoelf)\ **Replies:** 0\ **Last updated:** [May 7, 2026, 1:32pm UTC](https://calculix.discourse.group/t/notice-of-removal-of-fallback-lapack-routines-from-ccx/3937 "2026-05-07T13:32:30Z")
Dear CCX enthusiasts, as part of a recently merged change to our use of third party code in CCX, the fallback LAPACK routines previously distributed with CCX for users who want to build without providing their own LAPAC… --- ## [Signing in with Google or Github](https://calculix.discourse.group/t/signing-in-with-google-or-github/3934)
**Author:** [@kassbohm](https://calculix.discourse.group/u/kassbohm)\ **Replies:** 1\ **Last updated:** [May 7, 2026, 7:03am UTC](https://calculix.discourse.group/t/signing-in-with-google-or-github/3934 "2026-05-07T07:03:41Z")
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