Abstract: An energy source wave superposition method for calculating sound radiation from a vibrating structure at high frequency is proposed. Strength of virtual energy sources inside the acoustic source is obtained from acoustic intensity along the normal of the surface. With a matching energy transmission matrix, acoustic energy in the sound field can easily be calculated. The energy wave superposition method is a fast and accurate method which can avoid complicated meshing and integral evaluation involved in the energy boundary element method (EBEM). The validity and effectiveness is verified in the numerical simulation.

Key words: high-frequency sound field, sound radiation, energy source wave superposition