Virginia Silva Araujo Monteiro
Pontifical Catholic University of Rio de Janeiro, Brazil
Title: Poster: 3D FE model for the acoustic analysis of an automotive muffler with glass wool
Biography
Biography: Virginia Silva Araujo Monteiro
Abstract
A three dimensional finite element (FE) model is presented to compute the acoustics effect and transmission loss of a muffler considering glass wool. The proposed model comprehends a puzzle of state of art research models on poro-acoustics, pipe perforators, baffle perforators, and plane wave acoustics. The muffler considered comprehends four resonator chambers, and Silentex 2000 glass wool on the second chamber. Temperature influence in transmission loss is presented. Bench tests were used for model validation. Transmission loss results are compared with 1D analysis in GT Power.