Nonlinear vibrations of plates in axial pulsating flow

Tubaldi, Eleonora; Amabili, Marco; Alijani, Farbod

doi:10.1016/j.jfluidstructs.2015.03.021

Cited by 21 publications

(1 citation statement)

References 45 publications

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“…Tubaldi and Amabili [21] investigated the stability of an infinitely long and wide plate subjected to a pulsating potential flow based on linear dynamics. Tubaldi et al [22] considered the non-linear dynamic behaviour of the same problem. The flow-induced vibrations of radial and other shell type gates were studied analytically and experimentally in Anami et al [23,24] and Ishii and Knisely [25].…”

Section: Introductionmentioning

confidence: 99%

A three dimensional semi-analytical model for the prediction of gate vibrations immersed in fluid

et al. 2019

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A model is developed to predict bending vibrations of flood gates with fluid on both sides. The liquid flow is three-dimensional and the gate is represented as a thin plate. The fluid response is considered within the linear potential flow theory including the effect of compressibility and the generation of free surface waves. This way, the hydrodynamic fluid pressure exerted on the gate is predicted accurately in both low and high-frequency regimes. Both the structural and fluid responses are expressed in the modal domain as a superposition of modes. A semi-analytical solution of the fluid-interaction problem is obtained by describing the complete system in terms of in vacuo gate modes, which is computationally efficient compared to existing numerical methods. This allows for the accurate prediction of flood gate vibrations for a large number of simulations, making it possible to perform fatigue calculations and probabilistic evaluations. The case of a typical flat flood gate subjected to an impulsive wave impact is studied with the developed model. Results show the capability of the model to efficiently quantify flood gate vibrations considering the involved fluid-structure interaction, which can lead to more economical designs compared to common engineering practice.

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