Reference problem ===================== Geometry --------- A bar of length :math:`L\mathrm{=}\mathrm{10m}`, along the :math:`X` axis, modelled by 10 discrete elements with 2 knots. Material properties ----------------------- Each discrete element has a stiffness: :math:`k\mathrm{=}1000N\mathrm{/}m` Boundary conditions and loads ------------------------------------- .. csv-table:: "In :math:`x\mathrm{=}0` "," :math:`\mathit{dx}\mathrm{=}\mathit{dy}\mathrm{=}0`" "In :math:`x\mathrm{=}L` "," :math:`\mathit{Fx}\mathrm{=}\mathrm{10N}`"