Energy dissipation in high-energy ship-offshore jacket platform collisions |
| |
| Institution: | 1. School of Civil and Resource Engineering, The University of Western Australia, 35 Stirling Highway, Crawley WA 6009, Australia;2. Department of Civil Engineering, Curtin University, Kent St., Bentley WA 6102, Australia;1. Technological University of Panama, School of Mechanical Engineering, Panama City, Panama;2. Osaka University, Joining and Welding Research Institute, Suita, Osaka, Japan;1. Key Laboratory of High Performance Ship Technology of Ministry of Education, School of Transportation, Wuhan University of Technology, Wuhan, Hubei Province, PR China;2. Graduate School of Engineering, Osaka University, Suita, Osaka, Japan;3. Graduate School of Engineering, Hiroshima University, Higashi-hiroshima, Hiroshima, Japan;4. Design Department, Tsuneishi Shipbuilding Co., Ltd, Fukuyama, Hiroshima, Japan;1. Shandong Province Key Laboratory for Ocean Engineering, School of Engineering, Ocean University of China, Qingdao, 266100, China;2. Department of Mechanical Engineering and Science, Kyoto University, Kyoto-daigaku-katsura, Nishikyo-ku, Kyoto, 615-8246, Japan;3. Institute of Oceanographic Instrumentation, Qilu University of Technology (Shandong Academy of Sciences), Qingdao, 266100, China;1. Centre for Offshore Research and Engineering, Department of Civil & Environmental Engineering, National University of Singapore, Singapore;2. Subsea 7 Singapore Pte Ltd., Singapore;3. Geomarine Ltd., Singapore |
| |
| Abstract: | Ship collisions with offshore structures may be characterized by large amounts of kinetic energy that can be dissipated as strain energy in either the ship, or the installation, or shared by both. In this paper a series of FE numerical simulations are performed with the aim of providing a clearer understanding on the strain energy dissipation phenomenon, particularly upon the ship-structure interaction. Ships of different dimensions and layouts are modelled for impact simulations. Likewise, three platform jacket models of different sizes and configurations are considered. The collision cases involve joints, legs, and braces and are simulated for several kinetic energy amounts of the vessels and different impact orientations. An overview of the plastic deformation mechanisms that can occur in both ship and jacket structure is also given. The results from the various models with different collision scenarios are compared in terms of the strain energy dissipation with respect to the different ship/installation strength ratios. From the FEA simplified approaches are also derived in terms of the relative stiffness of the two structures for assessing the responses and energy absorptions of the two structures. The conclusions drawn from this study can be applied to a broader range of collision assessment of offshore steel jacket platforms subjected to high-energy ship impacts. |
| |
| Keywords: | Ship impact Ship-platform interaction Strain energy dissipation Relative strength Finite element analysis |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
