Proceedings of the Thirty-second (2022) International Ocean and Polar Engineering Conference
Shanghai, China, June 5–10, 2022
Copyright © 2022 by the International Society of Offshore and Polar Engineers (ISOPE)
ISBN 978-1-880653-81-4; ISSN 1098-6189

www.isope.org

Study on dynamic characters of side-by-side elastic plate using two-way
fluid-structure coupling method

Yu Yao1, Xing Zheng1,*, Qing-Wei Ma2,1 , and Zhi-Lu Zhou 1
1. College of Shipbuilding Engineering, Harbin Engineering University, Harbin, China
2. Schools of Engineering and Mathematical Science, City University, London, UK

the degree of flexibility Effects on flow, the results show that theflexibility of the plate has a significant effect on the flow-induced
reduction in drag coefficient. E Konstantinidis (2021) used Ansys
workbench to study the conditions for resonance in two-dimensionalelastic plates. Wang (2010) et al. studied two different vibration formsof flexible structures in axial flow through numerical simulation
software. The mutual influence of autonomous propulsion anddeformation of two or more plates has also been studied by a large
number of scholars. Cerdeira's research (2018) results show that themotion of two flexible plates will have a coupling phenomenon. anddecoupled swing modes, with small plate spacing and low-velocity
fluids, the antiphase mode dominates. Young (2017) used theimproved immersion boundary method to numerically simulate aflexible board in a viscous uniform flow, and found that when twoside-by-side flags were in the same sumo flapping mode and thedistance was small, the flapping amplitude of a single downstream flag
would be greatly increased. In addition, the research and applicationof fluid-structure interaction methods have also attracted the attentionof many experts. Heinz (2016) used two open source software,
EllipSys3D and HAWC2, to study the aeroelastic performance of a
10MW wind turbine with finite volume method and multi-bodydynamics method. Jacob Bruno (2021) used the ALE-SPH method for
fluid-structure interaction, and verified the motion of the twodimensional plate in uniform flow, but there were some differences in
the motion amplitude.
According to the above literature review, the motion of 3D series
elastic plates in uniform flow, especially the effect of upstream plates
on the motion of downstream plates, constitutes an interesting FSI
problem but has not received much attention. But this provides areference for billboard array design and is of great significance to theadvancement of billboard optimization technology. Therefore, it isnecessary to establish an accurate fluid-structure interaction analysis
method for plates. In addition, the three-dimensional finite element
method can more realistically simulate the motion state anddeformation state of solids in the fluid-structure interaction than theABSTRACT
In this paper, the interaction between the elastic plate and the fluid isinvestigated. The two-way fluid-solid coupling issue of an elastic platewith one end fixed and one end free in a uniform flow is numericallystudied using STARCCM+ and ABAQUS. By changing the windspeed, the phenomenon of wake vortex shedding and the interaction
between plates with different distances are discussed. For the same
spacing, the integrity of the wake vortex shedding of the first platechanges the vibrational morphology and frequency of the second plate.
Therefore, a plate spacing arrangement technique is proposed toreduce the influence of wake on the vibration mode of the rear plate.

KEY WORDS: elastic plate, two-way fluid-solid coupling, wakevortex shedding

INTRODUCTION
Flow-structure interaction (FSI) is encountered in many natural
phenomena, such as the rotating blades of wind turbines, the sails ofsailboats in the ocean and the sloshing of liquid tanks in LNG ships.
There are also many fluid-structure coupling phenomena of tandem
objects, such as the newly developed double-headed floating fans, thefoundations of ocean platforms and towering giant billboards on theseashore.
For the study of fluid-structure interaction of large billboards, theaccurate simulation of flexible sheets under wind field is the basicresearch. As a thin-walled slab structure, the large billboard is prone
to flutter and large deformation under fluid-structure interaction,
leading to structural failure. Researchers have done a lot of analysis innumerical simulation and experimental studies to reveal the dynamic
response and mechanism of flexible thin plates under the interactionof fluid structures. Putri (2014) uses the immersion boundary method
to simulate the interaction of flexible fibers and fluid flow, Ji Seok Lee(2012) calculates and analyzes the placement of a flexible plate
perpendicular to the free flow, simulates the flow around it, and studies

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