TY - JOUR
T1 - Finite amplitude vibrations of cantilevers of rectangular cross sections in viscous fluids
AU - Phan, Catherine N.
AU - Aureli, Matteo
AU - Porfiri, Maurizio
PY - 2013/7
Y1 - 2013/7
N2 - In this paper, we study finite amplitude vibrations of a cantilever beam of rectangular cross section immersed in a viscous fluid under harmonic base excitation. Fluid-structure interactions are modeled through a complex hydrodynamic function that describes added mass and damping effects in response to moderately large oscillation amplitudes. The hydrodynamic function is identified from the analysis of the two-dimensional flow physics generated by a rigid rectangle undergoing harmonic oscillations in a quiescent fluid. Computational fluid dynamics is used to investigate the effects of three salient non-dimensional parameters on the flow physics and inform the formulation of a tractable expression for the hydrodynamic function. Theoretical results are validated against experimental findings on underwater vibration of compliant beams of varying cross sections.
AB - In this paper, we study finite amplitude vibrations of a cantilever beam of rectangular cross section immersed in a viscous fluid under harmonic base excitation. Fluid-structure interactions are modeled through a complex hydrodynamic function that describes added mass and damping effects in response to moderately large oscillation amplitudes. The hydrodynamic function is identified from the analysis of the two-dimensional flow physics generated by a rigid rectangle undergoing harmonic oscillations in a quiescent fluid. Computational fluid dynamics is used to investigate the effects of three salient non-dimensional parameters on the flow physics and inform the formulation of a tractable expression for the hydrodynamic function. Theoretical results are validated against experimental findings on underwater vibration of compliant beams of varying cross sections.
KW - Beam flexural vibrations
KW - Computational fluid dynamics
KW - Hydrodynamic function
KW - Nonlinear vibrations
KW - Rectangular cross sections
KW - Underwater vibrations
UR - http://www.scopus.com/inward/record.url?scp=84879844457&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84879844457&partnerID=8YFLogxK
U2 - 10.1016/j.jfluidstructs.2013.03.013
DO - 10.1016/j.jfluidstructs.2013.03.013
M3 - Article
AN - SCOPUS:84879844457
VL - 40
SP - 52
EP - 69
JO - Journal of Fluids and Structures
JF - Journal of Fluids and Structures
SN - 0889-9746
ER -