Abstract
This paper presents a comprehensive dynamic analysis of a marine spar platform with various mooring system configurations. From a practical viewpoint, the mooring system configuration is managed by reel-motor devices that change cable lengths while keeping all cables under tension. The spar platform is anchored to the seabed by twelve mooring cables (in six cable bundle arrangements), and the domain that the cable-driven spar platform can be within is called the platform effective area. The analysis is based on a global frame of reference at the seabed and a local frame of reference at the platform center of gravity. Under the context of rigid body dynamics, the averaged values of the mooring cable tension are calculated through the use of a second norm measure. The platform dynamic response under unidirectional harmonic water waves and changeable submerged depths is investigated over the entire spar platform effective area. The minimum platform natural frequency at each location within the effective area is used as a measure of the platform degree of rigidity.
| Original language | English |
|---|---|
| Pages (from-to) | 283-292 |
| Number of pages | 10 |
| Journal | International Journal of Offshore and Polar Engineering |
| Volume | 27 |
| Issue number | 3 |
| DOIs | |
| State | Published - 2017 |
Bibliographical note
Publisher Copyright:© by The International Society of Offshore and Polar Engineers.
Keywords
- Dynamic analysis
- Effective area
- Mooring system
- Spar platform
ASJC Scopus subject areas
- Civil and Structural Engineering
- Ocean Engineering
- Mechanical Engineering