Reference problem
=====================


Geometry
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Legend

Bend at 90°

0° fold

The plate is rectangular with dimensions :math:`L=127\mathit{mm};l=\mathrm{12,7}\mathit{mm}`. The thickness of the plate is :math:`1.01\mathit{mm}`.

embedding


Material properties
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Each layer behaves in an orthotropic elastic manner (defined via DEFI_COMPOSITE).


* :math:`{E}_{L}=134400E6;{E}_{T}=10340E6;{\mathrm{\nu }}_{LT}=\mathrm{0,33};{G}_{LT}=5100E6;{G}_{TN}=1999E6`


* :math:`\mathrm{\rho }=1477`


Boundary conditions and loads
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The aim is to study the natural frequencies of the plate embedded on one of its sides (see figure).


Initial conditions
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Nil.