Examples of implementation: test cases ====================================== * Nonlinear dynamics SDLV120A [:external:ref:`V2.04.120 `]: Analysis of the propagation of a compression wave in an infinite elastic bar (absorption of the wave at the border of the mesh). SDLV121A [:external:ref:`V2.04.121 `]: Propagation, reflection and absorption of a plane wave in a massif modelled in the form of a 1D column.