An analytical method for calculating hydrostatics for jacket structures

Publikationstyp
Conference Paper
Date Issued
2020-08
Sprache
English
Author(s)
Last, Irene  
Krüger, Stefan  
Institut
Entwerfen von Schiffen und Schiffssicherheit M-6  
TORE-URI
http://hdl.handle.net/11420/8709
Volume
1
Article Number
V001T01A026
Citation
International Conference on Offshore Mechanics and Arctic Engineering (OMAE 2020)
Contribution to Conference
ASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2020  
Publisher DOI
10.1115/OMAE2020-18658
Scopus ID
2-s2.0-85100016746
In response to the continuing importance of offshore structures a framework for the simulation of offshore platforms is implemented in the open software environment E4. The noncommercial suite contains various methods for the ship design so that the newly developed procedures benefit from the existing knowledge. Jacket structures are installed as fixed platforms or compliant towers and play a significant role in the offshore exploitation. They are made out of hundreds of tubular steel members and each of the cylinders or cones can be seen as a simple body compared to ships. Besides the dynamic behaviour and fatigue analysis, the examination of the installation procedure especially the launch operation is of high interest. This article presents an analytical approach for the hydrostatic calculations of partially submerged cylinders. Hydrostatic forces on jacket structures are calculated by superimposing single cylinders and the results of the newly developed method are compared with a commercial simulation software. The aim is to speed up the computation time in comparison to numerical methods which is a significant advantage in the early design stage. The presented method will be the foundation for the simulation of jacket launching manoeuvres in time domain.