# Static Linear elastic analysis in Calculix

**URL:** <https://calculix.discourse.group/t/static-linear-elastic-analysis-in-calculix/2256>\
**Category:** Uncategorized\
**Created:** [May 7, 2024, 10:13am UTC](https://calculix.discourse.group/t/static-linear-elastic-analysis-in-calculix/2256 "2024-05-07T10:13:07Z")\
**Posts on this page:** 1\
**Showing post:** 2

<div class="post-metadata">

**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:** [May 7, 2024, 10:18am UTC](https://calculix.discourse.group/t/static-linear-elastic-analysis-in-calculix/2256/2 "2024-05-07T10:18:39Z")

</div>

Do you have NLGEOM enabled ?

> [@Comparison CalculiX-Abaqus with NLGEOM](https://calculix.discourse.group/t/comparison-calculix-abaqus-with-nlgeom/1748):
>
> Dear CalculiX users, in the past differences were reported in the results between CalculiX and Abaqus in the presence of NLGEOM on the \*STEP card. Further analysis has revealed at least 3 sources for these differences: In Abaqus the logarithmic strain is used (unless a hyperelastic material is selected). This implies that also thermal strains, if present, are logarithmic, i.e. the thermal expansion coefficient must have been determined based on the actual length of the specimen, not the initi…

---

_[View the full topic](https://calculix.discourse.group/t/static-linear-elastic-analysis-in-calculix/2256)._