.. _phononic-band_gaps: phononic/band_gaps.py ===================== **Description** Acoustic band gaps in a strongly heterogeneous elastic body, detected using homogenization techniques. A reference periodic cell contains two domains: the stiff matrix :math:`Y_m` and the soft (but heavy) inclusion :math:`Y_c`. :download:`source code ` .. literalinclude:: /../examples/phononic/band_gaps.py