solver-rewrite

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			fragmentation (2D)
			''''''''''''''''''

			:Sources:

			.. collapse:: fragmentation.py (click to expand)

			.. literalinclude:: examples/python/solid_mechanics_cohesive_model/fragmentation/fragmentation.py
			:language: python
			:lines: 9-

			.. collapse:: material.dat (click to expand)

			.. literalinclude:: examples/python/solid_mechanics_cohesive_model/fragmentation/material.dat
			:language: text

			:Location:

			``examples/python/solid_mechanics_cohesive_model/`` `fragmentation <https://gitlab.com/akantu/akantu/-/blob/master/examples/python/solid_mechanics_cohesive_model/fragmentation/>`_


			``fragmentation`` shows an example of a 1D bar fragmentation with extrinsic cohesive elements. It uses a custom boundary
			condition to impose a constant velocity. This is done by creating a class that inherits from ``DirichletFunctor``.
			The result is shown in :numref:`fig-ex-fragmentation`.

			.. _fig-ex-fragmentation:
			.. figure:: examples/python/solid_mechanics_cohesive_model/fragmentation/images/fragmentation.gif
			:align: center
			:width: 100%

			1D bar fragmentation.