Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Hydroelastic effects in structural response under wave impact
Submission Author:
Rubens Augusto Amaro Junior , SP
Co-Authors:
Liang-Yee Cheng, Rubens Augusto Amaro Junior
Presenter: Rubens Augusto Amaro Junior
doi://10.26678/ABCM.COBEM2017.COB17-2138
Abstract
Hydroelastic phenomena involving flexible bodies and free surface flow are important for several engineering applications and have received considerable attention in different fields. Some examples are: the dynamics of very large floating structures (floating airport, bridge, etc.) interacting with water waves, internal structures responses of liquid storage tanks, efficiency of wave energy converters, etc. A potentially important parameter in modeling hydroelasticity is the stiffness of the flexible body. If the body is elastic then liquid and structural motions can couple and drastically alter the structure response and the hydrodynamic loads. In this work, the influence of stiffness of the flexible body subject to a wave impact is investigated by using the Lagrangian particle-based method Moving Particle Simulation (MPS). It is a meshless method used to model both fluid and elastic solid, where the entire computational domain is discretized in particles. In case of fluid-structure interaction, a partitioned coupling between fluid and isotropic elastic solid is adopted. Explicit and semi-implicit time integration algorithms are used for elastic solid and fluid domains, respectively. To validate the numerical model, quantitative comparisons with available numerical results of dam breaking flow hitting an elastic plate are performed. Then the effects of the stiffness on the hydrodynamic load and structural response are investigated based on the dam breaking problem.
Keywords
hydroelasticity, Wave impact, fluid-structure interaction, Particle method, MPS
