Output details

Estimation of sound transmission through extruded panels using a coupled waveguide finite element-boundary element method

For sustainability and impact strength, railway rolling stocks are made from extruded aluminium constructions which are inherently “noisy” and affect passenger comfort. EPSRC funded research (GR/S81254) at Southampton University supported by Bombardier focused on audio frequency problems of such constructions. Extruded components were analysed as a semi-infinite problem using waveguide FE and BE approach. A particular application of railway carriage floor was analysed in terms of floor sound transmissibility characteristics. The accuracy of the model and minimal effort required compared to traditional approaches make the proposed approach an attractive and economical industrial design tool.