an:00881040
Zbl 0851.73053
Berm??dez, Alfredo; Rodr??guez, Rodolfo
Finite element computation of the vibration modes of a fluid-solid system
EN
Comput. Methods Appl. Mech. Eng. 119, No. 3-4, 355-370 (1994).
00032520
1994
j
74S05 74F10
transmission conditions; triangular Lagrangian elements; lowest order triangular Raviart-Thomas elements
Summary: We solve the interior elastoacoustic problem by a finite element method which does not present spurious or circulation modes for nonzero frequencies. It consists of classical triangular Lagrangian elements for the solid and lowest order triangular Raviart-Thomas elements for the fluid. Transmission conditions at the fluid-solid interface are taken into account in a weak sense. Numerical results for some test examples show the good performance of the proposed methodology.