Elmer Discussion Forum

when doing tutorial no. 8 "Non-linear elasticity equation –3D ", I noticed these 2 issues:

- the simulation cannot be run because the Poisson ratio is undefined. To fix this, the material "Austenitic stainless steel (AK Steel 201)" should get a Poisson ratio or the manual has to be adopted to add it manually
- in formula 8.1 the last parentheses in every formula line is incorrect (there is no opening parenthesis for them)

The Poisson ratio not showing up in ElmerGUI is a recent bug in GUI, it used to show up. The Poisson values are in the material lists
ElmerGUI/edf/egmaterials.xml file.
However, Young's Modulus gets put on the Nonlinear Solver tab, and Poisson gets put on the Linear tab, but Young's does not.

If I only have nonlinearelasticity.xml in my edf folder than it works
if I put both linearelasticity.xml and nonlinearelasticity.xml in my edf file
than the properties from the library get divided up between the two.

kevinarden wrote: ↑25 Mar 2023, 11:51 If I only have nonlinearelasticity.xml in my edf folder than it works
if I put both linearelasticity.xml and nonlinearelasticity.xml in my edf file
than the properties from the library get divided up between the two.

Thanks for this analysis. Should I open an issue in GitHub or how can I report the error that it is not forgotten?

I believe it is the purpose of this bug report forum.