Numerical modeling of near acoustic field of an infinite plate excited by point forc
Numerical modeling of the processes involved in acoustic radiation of elastic bodies is an important task in development of acoustic protection tools (APT), acoustic transducers as well as reduction of noise levels in machinery and equipment. These issues are widely addressed using the Finite Element Analysis (FEA) method. In this connection it is of interest to examine the reliability of solutions obtained with this method. The purpose of this paper is to compare the results obtained by FEA and analytical solutions obtained for the known problem of noise radiation. The case study is noise radiation by an infinite elastic plate (the analytical solution was published in [1] and [2]). The complex acoustic pressure near the plate is calculated using analytical and numerical models. The complex acoustic pressure field near the plate is calculated. Comparison is made between the results obtained by FEA and analytical equations. The results of numerical modelling and analytical calculations are in good agreement, which confirms that the finite element method can be used for modelling noise radiation by elastic bodies.