Benchmark study on slamming response of flat-stiffened plates considering fluid-structure interaction
Journal article, 2021

This paper presents a benchmark study on the slamming responses of offshore structures’ flat-stiffened plates. The objective wasto compare the fluid-structure interaction (FSI) simulation methodologies, modeling techniques, and established researchers' experiences in predicting slamming pressure. Three research groups employing the most common commercial software packages for numerical FSI simulations (i.e. LS-Dyna ALE, LS-Dyna ICFD, ANSYS CFX, and Star-CCM+/ABAQUS) participated in thisstudy. Wet drop test data on flat-stiffened aluminum plates of light-ship-like bottom structures available in the open literature wasutilized for validation of the FSI modeling. A summary of the experimental conditions including the geometry model and material properties, was distributed to the participants prior to their simulations. A parametric study on flat-stiffened steel plates having actual scantlings used in marine installations was performed to investigate the effect of impact velocity and plate rigidity on slamming response. The FE simulation results for the total vertical forces acting on the stiffened plates and their structural responses to those forces, as obtained from the participants, were analyzed and compared. The reliable and accurate predictions of slamming loads using the aforementioned commercial FSI software packages were evaluated. Additionally, equivalent static slamming pressures resulting in the same permanent deflections, as observed from the FSI simulations, were reported and compared with analytical models proposed by the Classification Standards DNV and existing experimental data for calculation of the slamming pressure. The study results showed that the equivalent load model depends on the water impact velocity and plate rigidity; that is, the equivalent static pressure coefficient decreases with an increase in impact velocity, and increases when impacting structures become stiffer.

Fluid-structure interaction

Permanent deflection

Benchmark study

Slamming pressure coefficient

Equivalent static pressure

Flat-stiffened plate


Dac Dung Truong

Nha Trang University

Seoul National University

Beom-Seon Jang

Seoul National University

Carl-Erik Janson

Chalmers, Mechanics and Maritime Sciences, Marine Technology

Jonas Ringsberg

Chalmers, Mechanics and Maritime Sciences, Marine Technology

Yasuhira Yamada

National Maritime Research Institute

Kota Takamoto

Tokyo University of Agriculture and Technology

Yasumi Kawamura

Yokohama National University

Han-Baek Ju

Seoul National University

Marine Structures

0951-8339 (ISSN)

Vol. 79 1 1-28 103040

Driving Forces

Sustainable development

Innovation and entrepreneurship

Areas of Advance


Materials Science


Basic sciences


C3SE (Chalmers Centre for Computational Science and Engineering)

Subject Categories

Vehicle Engineering

Metallurgy and Metallic Materials

Fluid Mechanics and Acoustics



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