FINITE ELEMENT VIBRATION ANALYSIS OF FLUID-SOLID SYSTEMS WITHOUT SPURIOUS MODES

摘要

This paper deals with the finite element approximation of the vibration modes of a problem with fluid-structure interaction. Displacement variables are used for both the fluid and the solid. To avoid the typical spurious modes of this formulation we introduce a nonconforming discretization. Error estimates for the approximation of eigenvalues and eigenvectors are given. [References: 15]