Open AccessA hybrid method for vibroacoustic coupling
Author(s) -
Émeline Sadoulet-Reboul,
Alain Le Bot,
Joël Perret-Liaudet
Publication year - 2008
Publication title -
european journal of computational mechanics
Language(s) - English
Resource type - Journals
eISSN - 2642-2085
pISSN - 2642-2050
DOI - 10.13052/remn.17.689-699
Subject(s) - acoustics , coupling (piping) , statistical energy analysis , range (aeronautics) , noise (video) , low frequency , physics , engineering , vibration , computer science , mechanical engineering , aerospace engineering , artificial intelligence , image (mathematics) , astronomy
hybrid method is proposed to study the noise radiated in the high frequency range by a gearbox inside an engine compartment. Due to its elastodynamic characteristics, the vibratory behaviour of the transmission lies in the low frequency range. However, the noise radiated is rather in the high frequency range facing the size of the acoustical cavity. Thus the proposed hybrid method allows to couple a low-frequency vibratory approach to the radiative transfer method used for the high frequency acoustical calculation. The coupling is realized through equivalent energy sources introduced on the surface of the vibrating structure.