Sobre la aplicación de métodos numéricos en la predicción de la transmisión de ruido: el problema vibro acústico, ventajas y limitaciones

Abstract

The main numerical techniques actually employed in the modelling of sound transmission are rapidly reviewed. The most important restricting aspects for the application of the finite element method to vibro acoustic problems are presented. They are the cause of the restriction of the use of FEM to the low frequency range. However, several new numerical techniques (most of them concentrated in the invention of new methods for the Helmholtz equation in the mid frequency range) which use a priori known information about the solution are being developed. The new characteristics of them are mentioned and a small example of a structural calculation shown.