cohesive_extrinsic_ig_tg
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In ``cohesive_extrinsic_ig_tg``, the insertion of cohesive element is not limited to a given location. Rather, elements at the boundaries of the block and those on the inside have a different critical stress defined in the ``material.dat`` file. The four block sides are then moved outwards. The resulting displacement is shown in :numref:`fig-ex-cohesive-ext-ig-tg`.

.. _fig-ex-cohesive-ext-ig-tg:
.. figure:: examples/c++/solid_mechanics_cohesive_model/cohesive_extrinsic_ig_tg/images/cohesive_extrinsic_ig_tg.gif
:align: center
:width: 60%

Displacement magnitude for the cohesive_extrinsic_ig_tg example.