International Journal for Numerical Methods in Engineering · 1997 · 159 citations · 18 references
ComputingComputational EngineeringPhysicsComputational MechanicsFinite Element AnalysisFinite Element MethodsFinite Element DiscretizationFinite Element FormulationMixed Finite Element MethodsNumerical AcousticsStructural AcousticsVibration AnalysisDisplacementFinite Element Methods In AcousticsFinite Element ModelingMomentum Conservation
We present reliable finite element discretizations based on displacement/pressure interpolations for the analysis of acoustic fluid–structure interaction problems. The finite element interpolations are selected using the inf-sup condition, and emphasis is given to the fact that the boundary conditions must satisfy the mass and momentum conservation. We show that with our analysis procedure no spurious non-zero frequencies are encountered, as heretofore calculated with other displacement-based discretizations. © 1997 by John Wiley & Sons, Ltd.
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