A study on slamming pressure on a flat stiffened plate considering fluid-structure interaction

作     者：Cheon, Jin Sol Jang, Beom-Seon Yim, Ki Ho Lee, HoSeong Daniel Koo, Bon-Yong Ju, Hanbaek 

作者机构：Seoul Natl Univ Dept Naval Architecture & Ocean Engn Seoul South Korea Seoul Natl Univ RIMSE Dept Naval Architecture & Ocean Engn Seoul South Korea Amer Bur Shipping Houston TX USA Amer Bur Shipping Busan South Korea 

出 版 物：《JOURNAL OF MARINE SCIENCE AND TECHNOLOGY》 (船舶科学与技术杂志)

年 卷 期：2016年第21卷第2期

页      面：309-324页

核心收录：

学科分类：08[工学] 0824[工学-船舶与海洋工程] 0814[工学-土木工程] 

基　　金：American Bureau of Shipping and the Technology Innovation Program "Development of design technologies for a 10 MW class wave and offshore wind hybrid power generation system" project - Ministry of Oceans and Fisheries (Republic of Korea) 

主　　题：Slamming Flat stiffened plate Fluid-structure interaction 

摘      要：Normally, the design slamming pressure on the bottom of a semi-submersible-type floating rig is determined in a simple way using the relative speed obtained from an air-gap analysis. However, few studies have taken a thorough, robust, and deep-background approach to the estimation of design pressure. To investigate the slamming pressure on the bottom of a semi-submersible rig, a simplified deformable stiffened plate of a zero-degree deadrise angle is simulated using the nonlinear FEM software LS-DYNA, which can take the influence of fluid-structure interaction (FSI) into account. Various parametric studies are carried out to examine the effects of structural flexibility, coupling stiffness, mesh size, velocity, stiffener size, and air cushion. The pressure response on the plate by the coupling of fluid and structure is studied and the FSI effect of each parameter is discussed. Then, equivalent transient and static loads that result in the same maximum or permanent deformation as FSI are evaluated for design purposes through a series of parametric studies.