[Gmsh] Linear elasticity equation using the template project file

Christophe Geuzaine cgeuzaine at uliege.be
Sat Feb 29 09:23:29 CET 2020

> On 28 Feb 2020, at 18:30, Zoltan <zoltan.csati at centralelille.fr> wrote:
> Greetings,
> I want to solve a plane stress problem in linear elasticity on a rectangular domain. To do this, I followed the instruction in the header of the Interactive_Elasticity.pro file.
> First, I created the domain and the default triangular mesh on it. Then I defined two physical groups, one for the left and one for the right side of the rectangle. After that, I clicked on File -> Merge and selected the Interactive_Elasticity.pro file. Here comes the problem. The instruction writes: “You will be prompted to setup your material, sources and the boundary conditions for each physical group, interactively.”. You can see from the attached screenshot (using the latest Linux x64 binary of ONELAB) that only the boundary conditions appeared.

You just need to define a physical group for the surface as well.


> The problem can still be solved but the displacement and stress values are zeros, as you see from the opened result text files. 
> Questions:
> 	• How can I set the material parameters  and ?
> 	• Why is my solution a zero vector?
> 	• How can I visualize any component of the displacement vector and the stress tensor?
> Thank you
> <Screenshot from 2020-02-28 14-20-34.png>_______________________________________________
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Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science 

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