Influence of the shape of the sound-absorbing construction cells on their acoustic efficiency in the linear and nonlinear operation modes

In this work, physical and mathematical models were formulated for predicting the effective acoustic properties of various shapes SAS cells in non-linear operation modes. Numerical studies have been carried out to assess the acoustic efficiency of single sound-absorbing structures cells of honeycomb and cone-like shapes in an interferometer with normal sound wave incidence in linear and non-linear operation modes. Verification of the developed mathematical models was carried out. According to the results of numerical experiments, the most efficient resonators were identified.