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Sound transmission through thin elastic shell with different fluids on the inside and outside is simulated using the in-house program based on the coupled finite element and boundary element method. The structure dynamics is simulated using the finite element method and the acoustic fields are simulated using the boundary element method. To avoid the non-uniqueness problem existing in the exterior acoustic boundary element method, Burton and Miller formulation is employed. The hyper-singular boundary integral is dealt with a regularization relationship. To validate this approach, a case with analytical solutions is simulated.
boundary element method, Burton and Miller’s formulation, finite element method, sound structure interaction
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