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<p style="margin: 0px 0px 1.2em !important;">Greetings,</p>
<p style="margin: 0px 0px 1.2em !important;"><br>
</p>
<p style="margin: 0px 0px 1.2em !important;">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 <a
href="https://gitlab.onelab.info/getdp/getdp/-/blob/master/templates/Interactive_Elasticity.pro">Interactive_Elasticity.pro</a>
file.<br>
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 <em>Interactive_Elasticity.pro</em>
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. The
problem can still be solved but the displacement and stress
values are zeros, as you see from the opened result text files.
<br>
</p>
<p style="margin: 0px 0px 1.2em !important;">Questions:</p>
<ol style="margin: 1.2em 0px;padding-left: 2em;">
<li style="margin: 0.5em 0px;">How can I set the material
parameters <img
src="https://chart.googleapis.com/chart?cht=tx&chl=E"
alt="E"> and <img
src="https://chart.googleapis.com/chart?cht=tx&chl=%5Cnu"
alt="\nu">?</li>
<li style="margin: 0.5em 0px;">Why is my solution a zero vector?</li>
<li style="margin: 0.5em 0px;">How can I visualize any component
of the displacement vector and the stress tensor?</li>
</ol>
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<p style="margin: 0px 0px 1.2em !important;">Thank you</p>
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