Numerical implementation and applications of coupling algorithm for structural-acoustic models with unequal discretization and partially interfacing surfaces

摘要

The numerical implementation of a coupled finite element-boundary element algorithm for computing simultaneously the structural vibration and the associated acoustic field and a complete set of validation and application data is presented. The new developments in the coupling algorithm presented in this paper are associated with a capability for unequal mesh density between the structural and the acoustic model, division of both models into interfacing and non-interfacing zones, efficient computation of the coupling matrices, and incorporation of acoustic multiple connection constraints in the coupling computations.