Reference problem
====


Geometry
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It is a rectangular plate, with a hole, modeled in :math:`\mathrm{2D}` plane constraints. Only a quarter of the plate is modelled thanks to symmetries. Dimensions are given in millimeters.

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L=100

H=150

A=10

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Boundary conditions and loads
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**Symmetry conditions:**

The plate is stuck following :math:`\mathit{Ox}` along side :math:`\mathrm{AG}` and following :math:`\mathrm{Oy}` along side :math:`\mathrm{BD}`.

**Loading under imposed stress:**

It is subject to traction :math:`P=100\mathit{MPa}` following :math:`\mathit{Oy}` distributed on the side :math:`\mathrm{FG}`.


Material properties
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The characteristics are:


*   Young's module :math:`E\mathrm{=}200000\mathit{MPa}`


*   Poisson's ratio :math:`\nu \mathrm{=}\mathrm{0,3}`


*   Elastic limit: :math:`200\mathit{MPa}`