Mid-frequency structural acoustic and vibration analysis in arbitrary, curved three-dimensional domains

A high-order finite element infrastructure is described for the numerical s olution of the vibratory response of fluid-structure systems in the mid-fre quency range. Underlying variational forms along with the use of an unstruc tured, topology-based, variable-degree, polymorphic finite element discreti zation scheme is described. Accurate numerical solutions to practical probl ems, including rigid and elastic acoustic scattering and interior acoustics , are presented to demonstrate the accuracy and flexibility of the infrastr ucture. (C) 2001 Elsevier Science Ltd. All rights reserved.