We study flexural vibrations of a thin rectangular cross section cantilever beam submerged in a quiescent viscous fluid. The cantilever is subject to base excitation and undergoes oscillations whose amplitude is comparable with its width. The structure is modeled as an Euler-Bernoulli beam and the fluid-structure interaction is captured through a nonlinear complex-valued hydrodynamic function which accounts for added mass and fluid damping. Results from a parametric 2D computational fluid dynamics analysis of an oscillating rigid lamina, representative of a generic beam cross section, are used to establish the dependence of the hydrodynamic function on the governing flow parameters. It is found that, as the frequency and amplitude of the vibration increase, vortex shedding and convection phenomena are enhanced, thus promoting nonlinear hydrodynamic damping. We derive a computationally efficient reduced order modal model for beam oscillations incorporating the non-linear hydrodynamic function and we validate theoretical results against experiments on underwater vibrations flexible beams.
Skip Nav Destination
ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
September 19–21, 2012
Stone Mountain, Georgia, USA
Conference Sponsors:
- Aerospace Division
ISBN:
978-0-7918-4509-7
PROCEEDINGS PAPER
Finite Amplitude Underwater Flexural Vibrations of Cantilevers
Matteo Aureli,
Matteo Aureli
Polytechnic Institute of New York University, Brooklyn, NY
Search for other works by this author on:
Maurizio Porfiri
Maurizio Porfiri
Polytechnic Institute of New York University, Brooklyn, NY
Search for other works by this author on:
Matteo Aureli
Polytechnic Institute of New York University, Brooklyn, NY
Maurizio Porfiri
Polytechnic Institute of New York University, Brooklyn, NY
Paper No:
SMASIS2012-7985, pp. 373-381; 9 pages
Published Online:
July 24, 2013
Citation
Aureli, M, & Porfiri, M. "Finite Amplitude Underwater Flexural Vibrations of Cantilevers." Proceedings of the ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. Volume 1: Development and Characterization of Multifunctional Materials; Modeling, Simulation and Control of Adaptive Systems; Structural Health Monitoring. Stone Mountain, Georgia, USA. September 19–21, 2012. pp. 373-381. ASME. https://doi.org/10.1115/SMASIS2012-7985
Download citation file:
13
Views
Related Proceedings Papers
Finite Amplitude Underwater Torsional Vibrations of Cantilevers
DSCC2012-MOVIC2012
Finite Amplitude Vibrations of Square Cross Section Beams in Viscous Fluids
DSCC2012-MOVIC2012
Related Articles
Calculation of the Vibration of an Elastically Mounted Cylinder Using Experimental Data From Forced Oscillation
J. Fluids Eng (June,1983)
Fluid-Structure Interaction of Stirrers in Mixing Vessels
J. Pressure Vessel Technol (November,2003)
Analytical and Numerical Investigations of Stable Periodic Solutions of the Impacting Oscillator With a Moving Base and Two Fenders
J. Comput. Nonlinear Dynam (November,2017)
Related Chapters
Stability and Range
Design and Analysis of Centrifugal Compressors
Random Turbulence Excitation in Single-Phase Flow
Flow-Induced Vibration Handbook for Nuclear and Process Equipment
Vortex-Induced Vibration
Flow Induced Vibration of Power and Process Plant Components: A Practical Workbook