Isogeometric analysis for acoustic fluid-structure interaction problems

Modeling and analysis of the dynamic behavior of acoustic fluid-structure interaction problems are important in understanding engineering structural systems. Characterization of such coupled systems through analytical modeling is limited and often numerical modeling is sought-after. Recently, Isogeometric Analysis (IGA) has gained prominence in modeling and analyzing complex systems. In the present study, IGA with Non-Uniform Rational B-Splines (NURBS) is used to characterize the acoustic fluid-structure interaction problems and the performance is compared with the classical Finite Element solution. The gain in computational performance of IGA is demonstrated with case studies using a beam and a plate coupled to a cavity filled with an acoustic medium. To illustrate further, an application of acoustic fluid-structure problem using IGA, a car cavity in two dimension coupled to a beam is also demonstrated.