Displacement variables 2 Eigenvalues and eigenfunctions 2 Elasticity 2 Finite element method 2 Finite elements 2 Fluid solid interface 2 Fluid structure interaction 2 Fluid-structure 2 Hydroelasticity 2 Incompressible fluid elastic structure 2 Kinematics 2 Lagrange multipliers 2 Linear triangular finite elements 2 Phase interfaces 2 Spectral problems 2 Spectrum analysis 2 Spurious modes 2 Vibrations 2 Vibrations (mechanical) 2 finite element method 2 incompressible fluids 2 stream functions 2