A BEM sensitivity and shape identification analysis for acoustic scattering in fluid-solid problems

In this paper a boundary element formulation for the sensitivity analysis of structures immersed in an inviscide ßuid and illuminated by harmonic incident plane waves is presented. Also presented is the sensitivity analysis coupled with an optimization procedure for analyses of ßaw identiÞcation problems. The formulation developed utilizes the boundary integral equation of the Helmholtz equation for the external problem and the CauchyÐNavier equation for the internal elastic problem. The sensitivities are obtained by the implicit di¤erentiation technique. Examples are presented to demonstrate the accuracy of the proposed formulations