New Approach to the Analysis of the Dynamics Behavior of a Fluid Structure Interaction

  • E. MalenovskýEmail author
  • F. Pochyly
  • L. Pohanka
Conference paper
Part of the IUTAM Bookseries book series (IUTAMBOOK, volume 1011)


This contribution is focused on the analysis of dynamic behavior of an elastic body moving in liquid. This paper presents a new approach to the solution that allows the separation of the structure and liquid from each other. The approach is based on the expansion of the solution into a series of eigenshapes of vibration. In addition, a new type of boundary conditions is presented that allows modal analysis and calculates the steady state or unsteady response. It is however necessary to perform some computational and experimental testing to verify this approach which is new. The cantilever beam vertically submerged in water was chosen as a test set up to represent a rotor. In the paper, some comparisons of computational and experimental analyses are presented. For this case a specific programme was created in MATLAB, where the curvilinear co-ordinates were chosen. The Bézier body was chosen for the description of the geometrical configuration and also for the approximation of the solution. For the experimental verification, a cantilever beam submerged under water was chosen.


Fluid structure interaction Finite element method Modal added mass Modal added damping Experimental analysis 



This research is sponsored by grant GACR No. 101/09/1716.


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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  1. 1.Faculty of Mechanical EngineeringBrno University of TechnologyBrnoCzech Republic

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