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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Cheon, Jin Sol Jang, Beom Seon Yim, Ki Ho Lee, Hoseong Daniel Koo, Bon-Yong |
| Copyright Year | 2014 |
| Abstract | Normally design bottom slamming pressure of semi-submersible type floater is determined in a simple way using a relative speed obtained from an air-gap analysis. However, there are few studies on a robust background on the estimation of the design pressure. In this study, to investigate the slamming pressure on the bottom of semi-submersible rig, a simplified deformable stiffened plate with 0° dead rise angle is simulated by using nonlinear FEM software, LS-DYNA which can take the influence of Fluid-Structure Interaction (FSI) into account. To simulate the slamming condition of semi-rig in a similar way, water hitting the structure with fixed boundary conditions is proposed. Various parametric studies are carried out to examine the effect of structural flexibility, coupling stiffness, mesh size, velocity, stiffener size, and air cushion effect. To further investigate the effect of horizontal velocity, the model is expanded and simulated with various horizontal water velocities. Pressure response on the plate by the coupling of fluid and structure is studied and the hydroelastic effect of each parameter is discussed. |
| Sponsorship | Ocean, Offshore and Arctic Engineering Division |
| File Format | |
| ISBN | 9780791845400 |
| DOI | 10.1115/OMAE2014-23905 |
| Volume Number | Volume 2: CFD and VIV |
| Conference Proceedings | ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering |
| Language | English |
| Publisher Date | 2014-06-08 |
| Publisher Place | San Francisco, California, USA |
| Access Restriction | Subscribed |
| Subject Keyword | Design Water Finite element model Fluids Computer software Semi-submersible offshore structures Boundary-value problems Stiffness Fluid structure interaction Finite element methods Pressure Hull |
| Content Type | Text |
| Resource Type | Article |
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