Non-Linearly Restoring Performance and its Hysteresis behavior of Dynamic Catenary | |
Li YL; Guo SX(郭双喜); Chen WM(陈伟民); Li M(李敏) | |
会议录名称 | ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering |
2019-07-11 | |
页码 | OMAE2019-95651 |
会议名称 | 38th International Conference on Ocean, Offshore and Arctic Engineering |
会议日期 | June 9–14, 2019 |
会议地点 | Glasgow, Scotland, UK |
摘要 | Catenary is increasingly used as mooring-line and riser system as the water depth gets larger due to its lower cost and easier installment. Its dynamic response and restoring performance become more complicated, as the length of the mooring-line become larger, and the structural and fluid dynamics the mooring-line become consequently more obvious. Compared to the quasi-static method where the static restoring force is mainly involved, the dynamic behaviors and its hysteresis of the catenary mooring-line are considered here so as to comprehensively examine the non-linearly restoring performance of mooring-lines. Based on the 3d dynamic vector equations along with the modified FEM simulations, the hysteresis character of the restoring stiffness and the influences of the catenary dynamics on its restoring performance are presented and discussed. It is found that, principally owing to the damping and inertial effect coming from the fluid and structural dynamics, the restoring force of the mooring-line depends on both the structural displacement and velocity. Moreover, the dynamic stiffness behaves as a hysteresis loop, instead of a curve. Our numerical results show that the energy consumption during one period rises nonlinearly with the increase of the body frequency ωd and amplitude A0. And, the influence of nonlinear restoring stiffness on the structural response along with the slack-taut phenomenon caused by structural /hydrodynamic inertia and damping is discussed. |
WOS记录号 | WOS:000513099900016 |
ISBN号 | 978-0-7918-5880-6 |
收录类别 | EI ; CPCI-S |
语种 | 英语 |
引用统计 | |
文献类型 | 会议论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/80811 |
专题 | 流固耦合系统力学重点实验室 |
通讯作者 | Chen WM(陈伟民) |
推荐引用方式 GB/T 7714 | Li YL,Guo SX,Chen WM,et al. Non-Linearly Restoring Performance and its Hysteresis behavior of Dynamic Catenary[C]ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering,2019:OMAE2019-95651. |
条目包含的文件 | 下载所有文件 | |||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
003.pdf(1132KB) | 会议论文 | 开放获取 | CC BY-NC-SA | 浏览 下载 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论