Homec4science
Diffusion akantu (features/72-czm-stability-improvements-in-explicit-dynamics) Browse

rAKA/examples/c++/solid_mechanics_model/boundary_conditions/README.rst
160eaf086982features/72-czm…

Last Change
Raw File

README.rst
View Options

Boundary conditions usage (2D)
''''''''''''''''''''''''''''''
:Sources:
.. collapse:: predefined_bc.cc (click to expand)
.. literalinclude:: examples/c++/solid_mechanics_model/boundary_conditions/predefined_bc/predefined_bc.cc
:language: c++
:lines: 20-
.. collapse:: user_defined_bc.cc (click to expand)
.. literalinclude:: examples/c++/solid_mechanics_model/boundary_conditions/user_defined_bc/user_defined_bc.cc
:language: c++
:lines: 20-
:Location:
``examples/c++/solid_mechanics_model/`` `boundary_conditions <https://gitlab.com/akantu/akantu/-/blob/master/examples/c++/solid_mechanics_model/boundary_conditions>`_
In ``predefined_bc`` it is shown how to impose Dirichlet boundary condition
using the predefined ``BC::Dirichlet::FixedValue``
(:numref:`fig-ex-predefined_bc`). Three built-in Dirichlet functors exist:
``FixedValue``, ``FlagOnly`` and ``IncrementValue``.
.. _fig-ex-predefined_bc:
.. figure:: examples/c++/solid_mechanics_model/boundary_conditions/images/predefined_bc.svg
:align: center
Dirichlet boundary conditions for the predifined_bc case.
To define another functor, a class inherited from
``BC::Dirichlet::DirichletFunctor`` can be created as illustrated in the example
``user_defined_bc`` where a sinusoidal BC is imposed. The corresponding
sinusoidal displacement is depicted in :numref:`fig-ex-user_defined_bc`. Note
that a Neumann BC is also imposed.
.. _fig-ex-user_defined_bc:
.. figure:: examples/c++/solid_mechanics_model/boundary_conditions/images/user_defined_bc_displ_mag.png
:align: center
:width: 60%
Displacement magnitude for the user_defined_bc example.
c4science · Help