Fluid-Elastic Beam Coupled Eigenvalue Analysis using the BE-FE Combined Method

摘要

New analytical procedure to calculate the fluid-elastic body coupled eigenvalue problem are presented by Boundary -^sFinite element combined method. The object of this paper is to show effectiveness and applicability of our new analytical method through the comparison with experimental results. The coupled system is formulated as the boundary value problem considered the dynamic interaction between elastic beam and fluid. The frequency equation governing the motion of coupled system is derived by BE-FE combined method and solved by a determinant search procedure. Several numerical examples are compared with natural frequencies corresponding to each mode obtained from the experimental modal analysis.