Eventos Anais de eventos
DINAME 2023
XIX International Symposium on Dynamic Problems of Mechanics
Experimental Insights on the Dynamics of Submerged Flexible Pipes Discharging Water in Post-Critical Regime
Submission Author:
Wagner Antonio Defensor Filho , SP
Co-Authors:
Wagner Antonio Defensor Filho, CELSO Pupo Pesce, Guilherme Vernizzi, Vitor Schwenck Franco Maciel
Presenter: Wagner Antonio Defensor Filho
doi://10.26678/ABCM.DINAME2023.DIN2023-0115
Abstract
This work brings experimental results of an innovative test campaign with submerged hanging cantilevered flexible pipes under discharging flow excitation in post-critical dynamic regime. The thresholds of instability were identified with root-loci diagrams. An underwater non-invasive optical tracking system was used to directly acquire the Cartesian displacements of predefined points of the pipes. Highly nonlinear dynamic behaviors were revealed in the form of flutter instabilities. Moreover, internal resonances with 1:1 and 2:1 frequency ratio were identified, the latter one recognized as dual-resonance regime.
Keywords
Pipes Conveying Fluid, Discharging flow, Post-Critical Regime, Dual-Resonance, Flutter
