Boundary conditions and loads
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    * Embedding the base of the cube:

Lower side: :math:`\mathit{DX}\mathrm{=}0`, :math:`\mathit{DY}\mathrm{=}0` and :math:`\mathit{DZ}\mathrm{=}0`,


    * On the upper side, two types of loading are applied:


        * Imposed displacement (models A, B, C)

Top side: :math:`\mathit{DZ}\mathrm{=}1`


        * Pressure imposed (modeling D)


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    * Top side: :math:`\mathit{PRES}=\mathrm{10⁸}`


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