test-periodic…

README.rst
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			eigen_modes
			'''''''''''

			In ``eigen_modes`` it is shown how to compute the eigen modes. The mode can be specify with the ``-m`` argument. Simulation is performed on a bar where a pulse is imposed.
			The ``-p`` will plot the following figures :numref:`fig-ex-eigen`:

			.. _fig-ex-eigen:
			.. figure:: examples/python/solid_mechanics_model/eigen_modes/images/eigen_modes.png
			:align: center
			:width: 70%

			Energy norms as a fonction of time (left), space-time diagram for diplacements (center) and space-time
			diagram for velocities (right) with the default values.