Analysis of Elevated Structure Radiated Noise with BEM-FEM Method
GAO Fei,XIA He,CAO Yan-mei and AN Ning
DOI:10.11835/j.issn.1674-4764.2012.01.009
Received ,Revised , Accepted , Available online July 01, 2015
Volume ,2012,Pages 42-46
- Abstract
Urban rail transit is becoming an important means of transportation and elevated structure is one important part of urban rail transit. So the radiation noise induced by elevated structure attracts more and more attention. Based on the theory of Helmholtz integral equation of BEM and fluid-structure coupling system of FEM, the sound pressure transmission vector reflecting the relation between structural vibration acceleration and radiation of sound pressure is derived and solved by the element radiation superposition method. The calculated results are in good agreement with the experimental data from a viaduct section of the Beijing airport rapid rail transit.